A person has a rocket pack attached to her back, and she rises vertically from the ground and then lowers back to the ground. She starts at rest (ie, velocity 0 m/s), and speeds up upward for 10 seconds. For the next 10 seconds, she slows down and comes to a tempoary stop. She then descends speeding up for the next 10 seconds, and then slows down for the next 10 seconds landing on the ground. She makes a soft landing (ie, 0 m/s velocity as she lands). Sketch her elevation h as a function of time t reecting all of the information given above. Particularly, the monotonicity and concavity should be correct as well as some appropriate points and slopes. In addition, shetch another graph of h versus t where everything is the same except that the landing is unfortunate.

Answers

Answer 1

To sketch the elevation has a function of time t, let's break down the scenario into its four segments:

1. Rising phase (0 to 10 seconds): The person starts at rest (velocity = 0 m/s) and speeds up upwards. During this phase, the graph of h(t) will be increasing and concave up, reflecting the positive acceleration.

2. Slowing down phase (10 to 20 seconds): The person slows down and comes to a temporary stop. During this phase, the graph of h(t) will still be increasing but now concave down, reflecting the negative acceleration (deceleration).

3. Descending phase (20 to 30 seconds): The person starts descending, speeding up during this phase. The graph of h(t) will now be decreasing and concave down, reflecting the negative velocity and positive acceleration.

4. Soft landing phase (30 to 40 seconds): The person slows down and makes a soft landing (velocity = 0 m/s). During this phase, the graph of h(t) will be decreasing and concave up, reflecting the negative acceleration. For the unfortunate landing scenario, the last phase would be different:

5. Unfortunate landing phase (30 to 40 seconds): The person does not slow down sufficiently and hits the ground with a non-zero velocity. In this case, the graph of h(t) will be decreasing and still concave down when reaching the ground, reflecting the negative velocity and positive acceleration.

What is function of time ?

The time function is used to generate a decimal number for a given time based on the hours, minutes and seconds information you provide.

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Related Questions

A turtle is walking across the garden at 2m/min.
How long will it take the turtle to travel 45 meters?

Answers

Answer:

22 mins and 30 seconds

Explanation:

2m in 1 min so:

45m in x mins Cross multiply

2x = 45

x = 45/2

x=22.5

What are the three physical things that can reduce the chances of injury while catching a fastball.

Answers

Answer:

Breaking bones, injuring tendons, bruising

Explanation:

Type the correct answer in the box. Use numerals instead of words. Frank has a sample of steel that weighs 80 grams. If the density of his sample of steel is 8 g/cm3, what is the sample's volume? The sample's volume is cm3.

Answers

Answer:

10cm^3

Explanation:

Given data

Mass of steel = 80grams

density of steel= 8 g/cm^3

We know that the formula for density is given as

density= mass/volume

make volume subject of formula

volume= mass/density

volume=80/8

volume= 10cm^3

Hence, the volume 10cm^3

what is the area of a car that touches the road if the car's weight on that tire is 3072 N and the pressure exerted on the road is 48 pa​

Answers

Answer:

Car's touch area = 64 m²

Explanation:

Given:

Weight of car = 3,072 N

Pressure = 48 pa

Find:

Car's touch area

Computation:

Area = Force / Pressure

Car's touch area = 3,072 / 48

Car's touch area = 64 m²

Anyone who answer will get brainlest

Answers

Answer:

D

Explanation:

work = Force x distance

work = 2000 x 2 = 4000

power = work÷ time

4000/.8 = 5000W

Answer:

The answer is D 5000w

Explanation:

work = Force x distance

work = 2000 x 2 = 4000

power = work÷ time

4000/.8 = 5000W

compare the liquid pressure at the surface of a swimming pool and the bottom of the swimming pool

Answers

Answer:

The pressure difference is equal to the product of density , height and g

Given that h is height difference between bottom and surface of a pool

P  

b

​  

−P  

s

​  

=dgh

Density d of water is 1

So we get P  

b

​  

−P  

s

​  

=gh

Therefore option A is correct

Explanation:

An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a circuit that "clicks" in response to current. The faster the current, the more clicks per minute. In this experiment, the number of clicks in one minute is recorded for each color of light shining on the photocell. To change the color of light, a different color of cellophane is placed over the same flashlight and the flashlight is then located a specific distance from the photocell.

Which of the following was not kept constant?


the color of the light after it has passed through the cellophane
the source of the original light
the distance of the light from the photocell
the test for photocell activation

Answers

Answer:

the color of the light after it has passed through the cellophane

Explanation:

Since in the given experiment, there is an impact of various colors of light on the cell i.e. photoelectric that should be measured. The photocell should be placed in a circuit when the current would passed. For every color that falls on the photocell, the value of the current that passed via the cell represent an idea.

In the given situation the color of light shows an independent variable and the dependent variable is clicks per minute or the current that passed through the cell

Answer:

A-the color of the light after it has passed through the cellophane

Explanation:

Find the momentum of a 3.0 kg mass when it is stopped

Answers

Answer:

4,0kg it is stopped!!!!!

The momentum of the object with a mass of 3 kg and when the object is stopped is zero. There is no momentum taking place.

What is momentum?

Momentum is equal to the product of the mass and velocity of the object. Momentum is a vector quantity as it has both magnitude and direction. The unit of momentum is kg.m/s².  Momentum represents the mass of the moving body.

Momentum is represented as the letter p. p = m×v, where m is the mass of the body and v is the velocity of the object. Momentum is directly proportional to the velocity. The velocity of the object is defined as the rate of change of displacement per unit time.

From the given,

mass of the object = 3 kg

the velocity of the object = 0 (when the body is stopped v=0)

the momentum, p = m×v

p = 3×0

   = 0

The linear momentum of the object is zero.

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How do you know that Earth is affected by the gravitational pull of the sun ? Explain how you would be affected if you were able to safely move farther and farther away from Earth . Support your ideas

Answers

Answer:

The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.

Explanation: Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. I am so sorry if I get this wrong, I'm in 5th grade! ♥

The Sun provides rotational motion to Earth by gravitational pull and if we get farther and farther, we will experience decreased gravitational force.

The Earth is continuously orbiting around the Sun, that is why we are experiencing the day and night everyday. And this orbiting is caused by the gravitational full by Sun on Earth, which is given as,

[tex]F = \dfrac{G \times M \times M'}{R^{2}}[/tex]

Here, G is the universal gravitational constant, M is the mass of Earth and M' is the mass of Sun. And R is the distance between the Earth and Sun.

If we suppose to move farther and farther away from the Earth then the strength of gravitational pull by Earth will decrease with the increasing distance. Because the gravitational pull is inversely proportional to square of distance.

Thus, we can conclude that the Sun provides rotational motion to Earth by gravitational pull and if we get farther and farther, we will experience decreased gravitational force.

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What is the plate tectonic theory? *

Answers

Answer:

Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago

find the value of x in this figure ​

Answers

Answer:

x=50

Explanation:

Answer:

vertically opposite angles are equal

Explanation:

so

2x+30=3x-20

2x-3x= -20-30

-1x= -50

so x is 50

as minus gets cancelled both sides.

HOPE IT HELPS YOU

PLS MARK ME BRAINLIEST

According to Newton's second law equation, what is the relationship between net force applied and the acceleration of the object

Acceleration is inversely proportional to the net force

if acceleration goes up forces goes down

if acceleration goes down mass goes down

Acceleration is directly proportional to the net force

Answers

Answer:

Acceleration is directly proportional to the net force

Explanation:

The net force acting on an object is given by :

F = ma

Where

m is mass

and

a is acceleration

It can be seen that the relation between the net force and the acceleration is direct i.e. as the acceleration increases, the net force will increase. Hence, the correct option is (d).

Identifique el tipo de variable para cada situación dada (cualitativa: nominal u ordinal) o (cuantitativa: continua o discreta)

Answers

For people who don't speak Spanish.

translation:  

Identify the type of variable for each given situation (qualitative: nominal or ordinal) or (quantitative: continuous or discrete)

sorry though I cant answer your question.

Which electromagnetic wave can be used to treat cancer? Group of answer choices a.microwaves b.gamma waves c.infrared waves d.xray waves

Answers

Answer:

Radiation therapy uses high-energy particles or waves, such as x-rays, gamma rays, electron beams, or protons, to destroy or damage cancer cells.Hope that helps

When the distance between two charges decreases, the electric force. 

Question 8 options:
A. Decrease
B. Only decreased if both charges are opposites
C. Increase
D. Only increase if both charges are positive

Answers

Answer:

Increase.

Explanation:

The force between two charges is given by :

[tex]F=\dfrac{kq_1q_2}{d^2}[/tex]

Where

k is electrostatic constant

d is the distance between two charges

The force is inversely proportional to the distance between charges. It means when the distance between two charges decreases, the electric force will increase. Hence, the correct option is (c) "increase".

Which of the following correctly lists the parts of the water cycle?
Question 7 options:

Evaporation, condensation, temperature, precipitation, collection

Condensation, build-up, runoff, precipitation, collection

Runoff, precipitation, evaporation, melting, condensation

Evaporation, condensation, precipitation, runoff, collection

Answers

evaporation, condensation, precipitation, runoff, collection

Bronco the skydiver, whose mass is 80 kg experiences 200 N of air resistance and gravity pulls on him with 800 N What is the acceleration of his fall?

Answers

H E R E I S T H E A N S W E R

Bronco the skydiver, whose mass is 80 kg experiences 200 N of air resistance and gravity pulls on him with 800 N. The acceleration of his fall  7.5 m/sec².

What is force?

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

To find the acceleration,

   F = mg

   F = 80.(10)

   F = 800 N

   air resistance = 200 N

   Net force = F - air resistance

                = 800 - 200

                =  600 N

   600 = mass . acceleration

   600 = 80 . acceleration

   acceleration = 7.5 m/sec²

Bronco the skydiver, whose mass is 80 kg experiences 200 N of air resistance and gravity pulls on him with 800 N. The acceleration of his fall  7.5 m/sec².

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3 Below, someone is trying to balance a plank with
stones. The plank has negligible weight.
a Calculate the moment of the 4 N force about O.
b Calculate the moment of the 6 N force about O.
- 2 m *
2 m-*
4 m
Р
1
4N
6N

Answers

Answer:

a. The moment of the 4 N force is 16 N·m clockwise

b. The moment of the 6 N force is 12 N·m anticlockwise

Explanation:

In the figure, we have;

The distance from the point 'O', to the 6 N force = 2 m

The position of the 6 N force relative to the point 'O' = To the left of 'O'

The distance from the point 'O', to the 4 N force = 4 m

The position of the 4 N force relative to the point 'O' = To the right of 'O'

a. The moment of a force about a point, M = The force, F × The perpendicular distance of the force from the point

a. The moment of the 4 N force = 4 N × 4 m = 16 N·m clockwise

b. The moment of the 6 N force = 6 N × 2 m = 12 N·m anticlockwise.

1. Regular reflection is the _______ reflection of light on a(n)______ surface
A.even, smooth
B.non or uneven, rough
C.semi-smooth, rough
D.uneven, rough​

Answers

Answer:

A. Even, smooth

Explanation:

In regular reflection, light reflected from a smooth surface in a definite direction

The answer Is A: even , smooth

12) Two-point charges each have a value of 3.0 C and 5.0 C and are separated by a distance of 6.0 m. What is the electric field at a point midway between the two charges?

Answers

Answer:

The electric field at a point midway between the two charges is 2 x 10⁹ N/C.

Explanation:

Given;

first point charge, Q₁ = 3.0 C

second point charge, Q₂ = 5.0 C

distance between the two point charges, R = 6.0 m

The mid-point between the two charges, r = R/2 = 3.0 m

3.0 C <-------------------->3.0m<----------------------->5.0 C

The forces are acting in opposite direction, the electric field strength of each charge is calculated as;

[tex]E_1 = \frac{kQ_1}{r^2} (-\bar x)\\\\E_1 = \frac{9\times 10^9 \times 3}{3^2}(-\bar x)[/tex]

[tex]E_2 = \frac{kQ_1}{r^2} (+\bar x)\\\\E_2 = \frac{9\times 10^9 \times 5}{3^2} (+\bar x)\\\\[/tex]

The net electric field is calculated as;

[tex]E_{net} = \frac{9\times 10^9 \times 5}{3^2} \ - \ \frac{9\times 10^9 \times 3}{3^2}\\\\E_{net} = \frac{9\times 10^9 }{3^2} (5-3)\\\\E_{net} = 2 \times 10^9 \ N/C[/tex]

Therefore, the electric field at a point midway between the two charges is 2 x 10⁹ N/C.

DEFINE KINETIC ENERGY AND PATAINTIA ENERGY please​

Answers

Answer:

1. Kinetic energy is the energy possessed by a body due to its motion. Potential energy is the energy possessed by a body due to its position or state. Kinetic energy can be transferred from one object to another, in case of collisions. Potential energy cannot be transferred. Thus, the potential energy is stored in the object due to its position, whereas the kinetic energy is possessed by an object due to motion.

Eg: A ball kept on the edge of the table possesses potential energy due to its height, whereas a ball falling down from the table will possess kinetic energy due to its motion.

2. The formula for Kinetic energy is as below: This means that kinetic energy is directly proportional to mass as well as velocity. But it is proportional to 1 unit of mass and a square of velocity. Hence, velocity has a greater effect on kinetic energy.…show more content…

3. The equation for kinetic energy is: .

Let’s calculate the kinetic energy of a 40 kg object traveling 15 m/s.

Solution: mass= 40kg, velocity= 15 m/s, so putting these numbers into the kinetic energy equation,

Now, let’s calculate the kinetic energy of a 40 kg object traveling 30 m/s.

Solution: mass= 40kg, velocity= 30 m/s, so putting these numbers into the kinetic energy equation, Thus, when we double the velocity of an object, its kinetic energy increases by four times. Hence the velocity of an object has more impact on kinetic energy than the mass of an object.

Explanation:

If you climb to the top of Mt. Everest, you will be 8850 m (about 5.50 mi) above sea level.
What is the acceleration due to gravity at this altitude?

Answers

Answer:

9.773m/s2

Explanation:

Given,

h=8848m

The value of sea level is 9.08m/s2

So,

Let g′ be the acceleration due to the gravity on the Mount Everest.

g′=g(1−h2h)

=9.8(1−640000017696)

=9.8(1−0.00276)

9.8×0.99724

=9.773m/s2

Thus, the acceleration due to gravity on the top of Mount Everest is =9.773m/s2

Hope it helped!!!

explain budding (8marks)​

Answers

Answer: Budding is one of the methods of asexual reproduction in organisms.

Explanation:

The asexual reproduction is the process in which new organisms are produced from the parent organism without the formation of gametes. The budding is one of the methods of asexual reproduction in which from a mature organism a bud develops as an outgrowth. The bud obtains the nutrition from the parent organism and increase in size. On maturity the bud dissociate or detach from the parent organism and lives as separate individual organism. Budding can be seen in the case of Hydra, and Yeast.

Consider two equally charged objects separated by a short distance.  According to Coulomb’s Law, how does doubling the charge on one object affect the electric force present between two charged objects

Question 4 options:
A. results in one-half of the original electric force
B. results in one-fourth of the original electric force
C. increases the electric force by a factor of four
D. double force by a factor of four

Answers

Answer:

Coulomb's Law states

F = K Q1 * Q2 / R^2      where K is the force constant

F2 / F1 = 2 Q1 * Q2 / (Q1 * Q2) = 2   where one of the charges is doubled

So the force will be doubled  (D looks rather vague but it cannot be the other three)

If a 2 kg ball is moving at 6 m/s to the right and then hits a wall and bounces back at - 4 m/s (left), what is the change in momentum (in kg*m/s)?

Answers

Answer:

Explanation:

Givens

delta mv = ?

m = 2 kg

vi = 6 m/s   right is positive

vf = - 4 m/s  left

Formula

delta mv = m (vf - vi)

Solution

delta mv = 2 * (-4 - 6)

delta mv = 2 * - 10

delta mv = - 20 kg m/s

(V) What are the objectives of the space mission?​

Answers

Explanation:

I hope this helps, I got this from another person

Which scientific activities will Juno conduct on its trip to Jupiter? Check all that apply.
a. measuring the amount of water in Jupiter’s atmosphere
b. landing on the planet surface to collect rock samples
c. taking images of the planet using infrared cameras
d. taking chemical “fingerprints” of Jupiter’s gases
e. mapping Jupiter’s gravitational and magnetic field
f. transporting astronauts to the planet

Answers

Explanation:

Hope this helps,

Juno entered a polar orbit of Jupiter on July 5th 2016 UTC, to begin a scientific investigation of the planet. After completing its mission, Juno will be intentionally deorbited into Jupiters atmosphere. Junos mission is to measure Jupiters composition, gravitational field, magnetic field, and polar magnetosphere.

Answer:

1

3

4

5

or

a

c

d

e

Explanation:

in which parts of a plant would u expect phototropism to occur?

Answers

Answer:

chloroplasts

Explanation:

Most plant shoots exhibit positive phototropism, and rearrange their chloroplasts in the leaves to maximize photosynthetic energy and promote growth.

Chloroplasts my guy

plzzzzzzz help i need it

Answers

Answer:

1 diagram is a single element

2 diagram is a single compound

3 diagram is a mixture of element and compounds

Acceleration is defined as
a.
a rate of displacement.
c.
the change in velocity.
b.
the rate of change of displacement.
d.
the rate of change of velocity.

Answers

D. The rate of change of velocity.

A = (Vf - vi)/t, therefore acceleration defines velocity at a RATE of change in time.
Other Questions
What is the volume of a rectangular prism 3 3/5 ft by 10/27 ft by 3/4 ft? Construct a multiple regression model.Use Excels Analysis ToolPak to conduct a regression analysis with AssessmentValue as the dependent variable and FloorArea, Offices, Entrances, and Age as independent variables. What is the overall fit r^2? What is the adjusted r^2?Which predictors are considered significant if we work with =0.05? Which predictors can be eliminated?What is the final model if we only use FloorArea and Offices as predictors?Suppose our final model is:AssessedValue = 115.9 + 0.26 x FloorArea + 78.34 x OfficesWhat wouldbe the assessed value of a medical office building with a floor area of 3500 sq. ft., 2 offices, that was built 15 years ago? Is this assessed value consistent with what appears in the database?Floor Area (Sq.Ft.)OfficesEntrancesAgeAssessed Value ($'000)479042817964720321215445940422209457204234196836603238156750004231187829902119949261021489105650424217743570214118729303215111312802131671488032421678162012357101820211767845302251585257021138424690224515391280114543341003127126835302241125136602233109411101250638267022399991100112065358104317191425602224772234031589036902215128235803227126436102181162396032171447 what color is the smoke that is emitted by buoyant and hand smoke signals? What is the H: HO molar ratio? One of your customers is delinquent on his accounts payable balance. Youve mutually agreed to a repayment schedule of $540 per month. You will charge .94 percent per month interest on the overdue balance. If the current balance is $14,760, how long will it take for the account to be paid off? How do you fit an MLR model with a linear and quadratic term for var2 using PROC GLM?PROC GLM DATA = ...;MODEL var1 = ____;RUN;QUIT;*Find the ____* Some lamps containing genies are occasions for surprise. Therefore, some occasions for surprise are lamps containing genies, a. Invalid, existential fallacy. b. Invalid, illicit conversion c. Invalid, illicit contrary. O d. Valid, no fallacy Oe. Invalid, illicit obversion the joint cost allocation method that would assign the same cost per unit to two joint products that sell for $10 and $40 respectively, is the Let X1, , X7 be independent normal random variables and xi, be distributed as N(i, 2) for i = 1,...,7 03 = 7.Find p(x To synthesize polyethylene glycol, or Carbowax [(-CH-CH20-)], which monomer and initiator can be used most efficiently? A. ethylene with radical initiator; B. ethane-1,2-diol with basic initiator; C. 1,2-epoxyethane with basic initiator;D. ethane-1,2-diol with acidic initiator; E. 1,2-epoxyethane with radical initiator. We know that our atmosphere is optically thick enough that when we look straight up, we see some scattered sunlight; on the other hand, it is pretty optically thin, since starlight is not scattered very much. Suppose at blue wavelengths (=400nm) the optical depth is 0.1. What fraction of starlight is scattered before it reaches the ground? What is the cross section for scattering of blue light by air molecules? In the formula\sigma \approx\sigma_T(\lambda_0/\lambda)^4, what would you infer 0 to be? hw_9a - most frequent character write a program that lets the user enter a string and displays the character that appears most frequently in the string.AlphaCount = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]Alpha = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'for ch in text: ch = ch.upper()index=Alpha.find(ch)if index >-1:AlphaCount[index] = AlphaCount[index]+1 Let + be the bitwise OR operator. What is the result of Ox1A2B + OXOA3B ? a. Ox1010 b. 0x1110 c. OXOA2B d. Ox1A3B e.None of the options A black hole probably exists at the galactic center because: create an example for a generation expression that will compute the cute of all of the odd numbers between 1 and 100, show how you would use this generator. The hairs on Xanders arms just started lying flat against his skin. Which is most likely his internal body temperature? 35C, or 95F 36C, or 96. 8F 37C, or 98. 6F 38C, or 100. 4F. A 15-n bucket (mass = 1.5 kg) hangs on a cord. the cord is wrapped around a frictionless pulley of mass 4.0 kg and radius 33.0 cm. find the linear acceleration of the bucket as it falls, in m/s2. TB MC Qu. 03-96 (Algo) A process manufacturer that uses...A process manufacturer that uses the weighted-average method reports the following.Beginning work in process inventoryUnits completed and transferred outEnding work in process inventorySavedEquivalent units o production for conversion are:Units33,000103,00038,000ConversionPercent Complete90%50%H fill in the blank. during the electrolysis of a na2so4 solution with a few drops of phenolphthalein, the solution turns pink around an electrode. this observation indicates that water is being _ at that electrode. Write the equation of the line in fully simplified slope-intercept form.