With no friction, you can use the relationship between potential and kinetic energy to predict the speed of the car at the bottom of this hill from its starting height. To do this start by setting the kinetic and potential energy equations equal to one another

Answers

Answer 1

The speed of the car at the bottom of the hill is obtained as, [tex]v = \sqrt{2gh}[/tex]

According the principle of conservation of energy, the total potential energy of the car will be converted to maximum kinetic energy when the car is at the bottom of the hill.

[tex]K.E = P.E\\\\\frac{1}{2} mv^2 = mgh\\\\v^2 = 2gh\\\\v= \sqrt{2gh}[/tex]

where;

v is the speed of the car at the bottom of the hillh is the height of the hillg is acceleration due to gravity

Thus, the speed of the car at the bottom of the hill is obtained as, [tex]v = \sqrt{2gh}[/tex]

Learn more about conservation mechanical energy here: https://brainly.com/question/332163


Related Questions

Which of the following processes generated heat during earths formation that is still a source of heat in earths interior

Answers

Answer:

There are three main sources of heat in the deep earth: (1) heat from when the planet formed and accreted, which has not yet been lost; (2) frictional heating, caused by denser core material sinking to the center of the planet; and (3) heat from the decay of radioactive elements

In the pie chart below, which of the following represents the amount of Earth's surface covered by water?
A only
B only
B and C
D only

Answers

Answer:

A

Explanation:

Which do you think is easiest and hardest to keep track of: hazardous waste that is present as a gas, liquid, or solid? Why?

Answers

Answer:

probably liquid cause it can be contained easily

a ball is thrown vertically up ward with a velocity of 25m/s. a/how fast was it moving after 2sec?​

Answers

Answer:

12.5

Explanation:

given

distance=25

time=2sec

required

=speed

solution

=v=s/t

25/2

=12.5m/s

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3. 4×106m.

Answers

Answer:

if not sure sorry hope someone helps u❤️

something about the earth's surface (land or water) changes

Answers

I would say land changes.

Determine the elastic energy U stored in
the compressed spring.

Answers

Answer:

Answer: The spring constant of the spring is k = 800 N/m, and the potential energy is U = 196 J. To find the distance, rearrange the equation: The equation to find the distance the spring has been compressed is therefore: The spring has been compressed 0.70 m, which resulted in an elastic potential energy of U = 196 J being stored.

Explanation:

8) If a dog is running at 25 feet per second, how far will he travel after I minute of running? Efe runs for 30 minutes at a speed of 40 miles per hour, how far will run? 10) Turbo the Snail moves across the ground at a pace of 12 feet per day If the garden is 48 feet away, how many days will it take for the snail to get there?​

Answers

the dog will run 1,500 feet
Efe will run 20 miles in 30 minutes
Turbo will take 4 days to get there

why the speed of sound in solid and liquid is not signoficantly affected by temperature

Answers

Explanation:

because the molecules are closer together and more tightly bonded in solids

A father pushes his child in a cart. The cart starts to move.



Scientists can use many physical quantities to describe what is happening.

The car is placed on a ramp, which is 20 meters high. The mass of the car and the child is 100kg.



Calculate the potential energy the car will have before it is let go and the velocity the car will travel at down the ramp assuming no frictional forces.



Acceleration due to gravity (g) = 10 m/s2

Answers

The potential energy of the car when it let go is 20,000 J.

The speed of the car at the bottom of the ramp is 20 m/s.

The given parameters;

mass of the car, m = 100 kgheight of the car, h = 20 m

The potential energy of the car is calculated as follows;

P.E = mgh

P.E = 100 x 10 x 20

P.E = 20,000 J

The speed of the car at the bottom of the ramp is calculated as follows;

[tex]K.E = P.E\\\\\frac{1}{2} mv^2 = mgh\\\\v^2 = 2gh\\\\v = \sqrt{2gh} \\\\v = \sqrt{2 \times 10 \times 20} \\\\v = 20 \ m/s[/tex]

Learn more here:https://brainly.com/question/18597080

A mass 25kg is attached to a spring which is held stretched a distance 120 cm by a force F=300N (Fig. 7-28), and then released. The spring compresses, pulling the mass. Assuming there is no friction, determine the speed of the mass m when the spring returns: (a) to its normal length (x = 0). (b)find the spring constant k?

Answers

Explanation:

Spring is stretched by force f to distance

"X"

now here by force balance we can say

f = kx

k = !

now here we will we say that energy stored in the spring will convert into kinetic energy

kx² = mv²

(x² = mv²

now solving above equation we will have

PART 2)

now for half of the extension again we can use energy conservation

ka²-k(x/2)² = 1 {mv²

¾fx=mv²

now the speed is given as

3 fr 4m V=

Suppose that a cart is moving along a road at a constant velocity. Give two examples of ways to cause the cart to decelerate, explaining how the net force is affected. (2 points)

Answers

The cart moving at a constant velocity will decelerate when a braking force is applied or the road is made to become rougher.

Deceleration is also known as negative acceleration. It occurs when velocity decreases with time. There are two ways by which the cart moving at constant velocity can be made to decelerate. These two ways are;

By applying a braking force: A braking force causes the velocity to decrease with time. When a braking force is applied the frictional force exceeds the forward force hence the net force decreases.By increasing the roughness of the road: When the roughness of the road is increased, the frictional force also increases causing the net force on the cart to decrease hence it decelerates.

Learn more: https://brainly.com/question/14281129

Explain why position is a dependent variable in a position versus time graph.

Answers

Answer:

Explanation:

The position depends on the time.  The longer the time, the further the distance.

How to calculate specific heat.

Answers

Need more information to answer this question

how does the frequency of a radio wave compare to the frequency of the vibrating electrons that produce it?

Answers

Answer:

mass

Explanation:

A 2kg body is moving a long a horizontal circular path of radius 2m with constant speed of 6m/s . what is the magnitude of the force acting on the body ? ​

Answers

The magnitude of force acting on the body is 36N

which wave has a higher frequency and why?

Answers

Explanation:

the figure in the left side has higher frequency.

because it has more nos. of wave in 1sec.

a person weighing 500 N climbs 3 m how much power. is needed to make the climb in 5 s?

Answers

Answer:

300watts

Explanation:

Answer:

300 watts

lol hoped this helped

:)

In a car race, the average speed of the car was 90 km/hr where the total
covered distance was 450 km.
1. Calculate the average speed of the car in SI unit.

Answers

Explanation:

The speedometer of a motor car showed the following speeds in km per hour at the ends of successive intervals of 3 secs. 38.9, 52.8, 64.4. 73.6, 80.9, 86.1, 90.0, 92.5 Plot the velocity – time graph in convenient units and find from the graph, (a) The distance covered while the speed increased from 80

If the acceleration of an object increases, what effect does this have on the Force and Mass?
A Force Increases, Mass Increases
B Force Decreases, Mass Decreases
C Force increases, Mass remains the same
D Force Decreases, Mass remains the same​

Answers

Answer:

Force Increases and Mass remains the same.

Explanation:

a bus increase its velocity from 30m/s to 45m/s and covers 300m distance. Find the time​

Answers

Answer:

3.5 m/s²

Hope this helps, have a nice day/night! :D

Help plz????????? Giving out Brainly

Answers

Answer:

Answer should be (B)

Explanation:

If the forces on an object are balanced (or if there are no forces acting on it), this is what happens: a stationary object stays still. a moving object continues to move at the same speed and in the same direction.

ALSO: forces acting upon an object are balanced, then the object will maintain its state of motion. To maintain the state of motion is to keep the current speed and direction. But if the forces are not balanced, the object will change its state of motion.

A 0.5 kg cheeseburger is lobbed at a particularly unhappy customer with a force of 10 N.
While it is being thrown, what is the acceleration experienced by the cheeseburger?
Answer in units of m/s2

Answers

The acceleration that the cheeseburger experienced is 20 m/s^2.

A) infrared energy
B) microwave energy
C) radio wave energy

Answers

Answer:

Infrared energy

Explanation:

Answer:

A) infrared energy

Explanation:

The wheel of bicycle has a radius of 25cm.what will be the magnitude of the angular displacemant in radian and revolution respectively,when the wheel has rolled a distance of 350cm on straight level road?

Answers

14 radians and 2.23 revolutions

hope this helps

In which material does the light wave have the larger wavelength?

Answers

Answer: in the smaller/ thinner pieces.

Jade has a refractive index of 1.61. If light approaches the gem at an angle of 80.0°, what is the angle of refraction?

Calculate the index of refraction of a material if the angle of incidence is 60° and the angle of refraction is 50°

Answer using calculations & full work and thoughts shown.

Answers

From Snell's law,  the angle of refraction is 38 degree approximately and the index of refraction is 1.13

The given refractive index is 1.61

If light approaches the gem at an angle of 80.0°, that means the angle of incidence is 80.0°

To calculate the angle of refraction, we will use Snell's law which state that:

n = sin i / sin r

where n = refractive index

Substitute all the parameters into the formula

1.61 = sin 80 / sin r

make sin r the subject of formula

sin r = sin 80 / 1.61

sin r = 0.611

r = [tex]Sin^{-1}[/tex](0.611)

r = 37.7

r = 38 degree (Approximately)

We will use the same formula to calculate the index of refraction of a material if the angle of incidence is 60° and the angle of refraction is 50°. That is,

n = sin i / sin R

Where n = index of refraction

i = Incidence

R = refraction

Substitute all the parameters to the formula

n = sin 60 / sin 50

n = 0.866 / 0.766

n = 1.13

Learn more here: https://brainly.com/question/24321580

PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!

While exercise generally benefits all of the glands, why is it particularly beneficial for the pancreas?
A.
Exercise increases the levels of the hormones that the pancreas produces.
B.
Physical activity positively impacts blood sugar, giving the pancreas less work.
C.
The pancreas can only properly regulate hormones when the body is in motion.
D.
The pancreas is structured more like a muscle than a gland, so it benefits from stretching.


PLEASE NO LINKS

Answers

Answer:

B

Explanation:

The pancreas is responsible for regulating blood sugar, exercise gives it less work to do

Excercise is particularly beneficial for the pancreas because physical activity positively impacts blood sugar, giving the pancreas less work. Correct option is B.

When you engage in physical activity, several things happen that benefit the pancreas:

Increased Insulin Sensitivity: Exercise helps improve the body's sensitivity to insulin. This means that cells become more responsive to the insulin signal, allowing glucose to enter the cells more effectively. This can help prevent insulin resistance, a condition where cells don't respond properly to insulin and blood sugar levels rise.

Improved Blood Sugar Regulation: Exercise can lower blood sugar levels by facilitating the uptake of glucose into cells for energy. This can reduce the burden on the pancreas to produce excess insulin to manage high blood sugar levels.

Reduced Risk of Type 2 Diabetes: Regular physical activity is associated with a reduced risk of developing type 2 diabetes, a condition characterized by impaired blood sugar regulation. By helping maintain healthy blood sugar levels, exercise supports the pancreas in its role of insulin production.

To know more about pancreas:

https://brainly.com/question/33716745

#SPJ3

Find the average speed of the car if it's speed is 50km/hour and distance is 10 km.

Answers

Answer:

50km/hour

Explanation:

the average speed and the speed are the same

In the diagram below if bulb 2 blew out what would happen to the VOLTAGE? (it’s not decreases that’s why it’s highlighted)

Answers

Answer:

apagado, así que lo más destacado es el problema, oh, está bien, esa es la respuesta, cariño.

Other Questions
Saddam Hussein was the leader of what country from 1979 to 2003?A) AfghanistanB)IranC)IraqD)Pakistan why can a student see her reflection on a computer moniter when the monitor is turned off How to lnow the numberof turning points in a function. Qu se necesita para que el funcionario pblico pueda tomar decisiones y evaluar polticas alternativas en base aprincipios ticos y morales? if you were planning to escape from someone and you were tied to a chair what would you do What is 6 3/4 percent of 800 the origins of calypso music in the caribbean region can be traced to the contributions of: Select the correct answer.Mark works as an operations manager in a manufacturing firm. Mark is very particular about the new employees that the company plans to hire, especially because the business needs skilled workers to use new machinery. Which management function is Mark carrying out to maximize his companys operations in the future?A. staffingB. controllingC. planningD. organizing What's the scientific name of a leopard? I often relate to the following groups early childhood brainly. BRAINLIEST IF CORRECT what type of cell signaling is clonal selection? Write the equation of the line that passes through the point (-3, 1) and is perpendicular3to a line whose slope is 2 Which of the following lines has a negative slope? Is it RedIs it BlackIs it Blue 3.833 kJ of heat is required to convert a 36.8 g sample of ethylalcohol from the solid to liquid phase. What is the heat offusion of ethyl alcohol in J/g? Choose One challenges Brian Faced (Hatchet) Molly drew a map of her town. She graphed the point L(1.75, 3) for the library. The ice cream shop is located at L, a reflection of L across the x-axis. The fire station is located at L, a reflection of L across the y-axis. Identify the ordered pair that describes the location of the fire station. Express your answer using decimal notation. (__,__) The population of a place was 56000. Next 5 years it is expected to rise by 50%. What will be the population in next 5 years? Alecia runs the air conditioner im her home when it id hot outside. She uses the equation C = 0.01m to determine the cost , C , in dollars , to run the air conditioner for m minutes . According to the question what is the cost per minute of running alecias air conditioner? solve the equation.[tex]\sqrt{x(x+2)} = 0[/tex] Finds the value of x