Energy 1

Which variable has a direct impact on the kinetic energy of a moving object?

• color

• volume

• mass

• None of these variables affects kinetic energy.

Which statement best summarizes the effect of velocity on kinetic energy?

• Decreasing an object’s velocity can increase kinetic energy.

• Increasing an object’s velocity can decrease kinetic energy.

• The velocity of an object has no effect on kinetic energy.

• Increasing an object’s velocity can increase kinetic energy.

Which statement best summarizes the effect of mass on kinetic energy?

• The mass of an object has no effect on kinetic energy.

• Decreasing an object’s mass can increase kinetic energy.

• Increasing an object’s mass can decrease kinetic energy.

• Increasing an object’s mass can increase kinetic energy.

A student is conducting a physics experiment and rolls four different-sized marbles down identical ramps. The marbles have the following masses:

Marble A: 1.0 gram

Marble B: 1.5 grams

Marble C: 2.0 grams

Marble D: 2.5 grams

Assuming the marbles reach the same speed, which will have the greatest kinetic energy at the bottom of the ramp?

• Marble D

• Marble C

• Marble A

• Marble B

You are riding your bicycle down a steep hill. The closer to the bottom of the hill you get, the greater your speed. At what point on the hill do you have the least amount of kinetic energy?

• The least amount of kinetic energy is at the top, at the start of the ride.

• The least amount of kinetic energy is right before the bottom of the hill.

• The least amount of kinetic energy is between the top and middle of the hill.

• The least amount of kinetic energy is between the middle and bottom of the hill.

A rock sitting on the edge of a cliff has what kind of energy?

• Gravitational potential energy

• Kinetic energy

• Chemical potential energy

• Electric potential energy

At what point on the rollercoaster ride do the riders have the greatest amount of potential energy?

• Point C

• Point B

• Point D

• Point A

Which factor can have the greatest effect on increasing the potential energy of an object?

• Increasing the object’s velocity

• Changing the object’s volume

• Changing the object’s position

• Increasing the object’s speed

When riding a skateboard down a ramp, how do potential and kinetic energy change?

• Potential and kinetic energy both decrease as you move downhill.

• As you move down the ramp, kinetic energy increases and potential energy decreases.

• As you move down the ramp, kinetic energy decreases and potential energy increases.

• Potential and kinetic energy both increase as you move downhill.

At what point in the path of this ball does the ball have the least amount of potential energy?

• At point A, right before it leaves the ground

• At point B, when it reaches its maximum height

• The ball has the least potential energy during points A and C.

• At point C, immediately before it hits the ground