Quiz about Understanding Potential Energy Concepts

Question 1

At which point does the ball has the greatest gravitational potential energy ?

Accepted Answer

A

Answer

G

Answer

D

Answer

C

Answer

G

Question 2

How can we increase the gravitational potential energy of the car?

Accepted Answer

Strap a boulder to the car so that it contains more mass.

Answer

Keep the length of the hill at 50 m but only 5 m tall.

Answer

Take the interior out of the car so that the car has less mass.

Answer

Keep the hill at 10 m tall but increase the length of the hill so that the car has farther to roll.

Question 3

Which of the following expressions correctly represents the gravitational potential energy of an object?

Accepted Answer

$$P_e=m\cdot g\cdot h$$

Answer

$$P_e=\frac{1}{2}\cdot m\cdot v^2$$

Answer

$$P_e=m\cdot g\cdot v$$

Answer

$$P_e=m\cdot g\cdot h^2$$

Question 4

If a 5 kg object is lifted to a height of 10 meters, what is its gravitational potential energy? (Assume $$g=9.8 ext{1m/s}^2$$ )

Accepted Answer

$$490.5 ext{J}$$

Answer

$$49 ext{.5J}$$

Answer

$$98.1 ext{J}$$

Answer

$$981 ext{J}$$

Question 5

A 2 kg object is dropped from a height of 15 meters. What is the work done by gravity when the object reaches the ground? (Assume $$g=9.8 ext{1m/s}^2$$ )

Accepted Answer

$$294 ext{.3J}$$

Answer

$$147 \, ext{J}$$

Answer

$$30 \, ext{J}$$

Answer

$$0 \, ext{J}$$

Question 6

Which of the following is an example of gravitational potential energy being converted into kinetic energy?

Accepted Answer

A ball falling from a height.

Answer

A compressed spring being released.

Answer

A car accelerating on a flat road.

Answer

A battery powering a light bulb.

Question 7

If the gravitational potential energy of an object is $$200 \, ext{J}$$ at a certain height, what will be its potential energy if the height is doubled?

Accepted Answer

$$400 \, ext{J}$$

Answer

$$100 \, ext{J}$$

Answer

$$200 \, ext{J}$$

Answer

$$800 \, ext{J}$$

Question 8

Where would a person have to be located to have the maximum gravitational potential energy?

Accepted Answer

up on the roof

Answer

down in the basement

Answer

in the middle

Answer

outside

Question 9

You throw a ball into the air as shown in the diagram. At what point does the ball have the most gravitational potential energy?

Accepted Answer

X

Answer

W

Answer

Y

Answer

Z

Question 10

Which of the following statements are true about height in our potential energy equation?

Accepted Answer

When Height is 0 Potential energy is 0.

Accepted Answer

When we increase height we increase potential energy.

Accepted Answer

When we decrease height we decrease potential energy.

Answer

When we increase height we decrease potential energy.

Question 11

If the mass of an object is doubled while keeping the height constant, what will be the new gravitational potential energy?

Accepted Answer

$$ ext{Double the original}$$

Answer

$$ ext{Same as before}$$

Answer

$$ ext{Half of the original}$$

Answer

$$ ext{Quadruple the original}$$

Question 12

Which of the following factors does NOT affect the gravitational potential energy of an object?

Accepted Answer

$$ ext{Color of the object}$$

Answer

$$ ext{Mass of the object}$$

Answer

$$ ext{Height of the object}$$

Answer

$$ ext{Gravitational acceleration}$$

Question 13

A 3 kg object is lifted to a height of 20 meters. What is its gravitational potential energy? (Assume $$g=9.8 ext{1m/s}^2$$ )

Accepted Answer

$$588 ext{J}$$

Answer

$$58.8 ext{J}$$

Answer

$$196 ext{J}$$

Answer

$$1176 ext{J}$$

Question 14

Energy stored because of gravity is called

Accepted Answer

Gravitational Potential Energy

Answer

Mechanical Advantage

Answer

Kinetic Energy

Answer

Chemical Energy

Understanding Potential Energy Concepts

15 questions

At which point does the ball has the greatest gravitational potential energy ?

How can we increase the gravitational potential energy of the car?

Which of the following expressions correctly represents the gravitational potential energy of an object?

Which of the following is an example of gravitational potential energy being converted into kinetic energy?

Where would a person have to be located to have the maximum gravitational potential energy?

You throw a ball into the air as shown in the diagram. At what point does the ball have the most gravitational potential energy?

Which of the following statements are true about height in our potential energy equation?

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