Question 1

Which of the following statements best explains the relationship between the speed of a toy car and the energy it has when it is rolling down a ramp?

Accepted Answer

As the speed of the toy car increases, its kinetic energy also increases.

Answer

The speed of the toy car does not affect its energy.

Answer

The energy of the toy car decreases as its speed increases.

Answer

Faster cars have less energy than slower cars.

Question 2

A cyclist rides downhill and notices that as she moves faster, she feels herself gaining energy. What type of energy increases with her speed?

Accepted Answer

Kinetic energy increases as her speed increases.

Answer

Chemical energy is gained while cycling downhill.

Answer

Potential energy increases with speed.

Answer

Thermal energy increases as she moves faster.

Question 3

If two identical balls are rolling at different speeds, how does the speed affect the energy of each ball?

Accepted Answer

The ball rolling at a higher speed has more kinetic energy.

Answer

Speed does not affect the energy of the balls.

Answer

The ball rolling at a higher speed has less kinetic energy.

Answer

Both balls have the same amount of kinetic energy regardless of speed.

Question 4

A horse gallops at twice its previous speed. What effect does this change have on the horse's kinetic energy?

Accepted Answer

The horse's kinetic energy increases by four times when its speed is doubled.

Answer

The horse's kinetic energy doubles when its speed is doubled.

Answer

The horse's kinetic energy decreases when its speed is doubled.

Answer

The horse's kinetic energy remains the same.

Question 5

A baseball is thrown faster by a pitcher during a game. What happens to the energy of the ball as its speed increases?

Accepted Answer

The ball's kinetic energy increases as its speed increases.

Answer

The ball's energy remains the same regardless of its speed.

Answer

The ball's potential energy increases as its speed increases.

Answer

The ball's kinetic energy decreases as its speed increases.

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