Mechanical Energy

What happens when a pebble lying on the ground is

kicked?

• Energy is created.

• Energy is destroyed.

• Energy is transferred.

• Energy is completely lost.

Which will cause an increase in the mechanical energy

of an object?

• decreasing its gravitational energy

• increasing its potential energy

• increasing its electrical energy

• decreasing its kinetic energy

Which has the most kinetic energy?

• A dump truck driving down a hill

• A basketball rolling down a hill

• A bus stopped at the top of a hill

• A golf ball sitting at the top of a hill

Which of the following is not an example of potential

energy?

• a battery

• a speeding bullet

• a stick of dynamite

• a stretched rubber band

As a roller coaster car travels down a hill, which type of

change in energy allows it to speed up?

• potential energy changing into heat energy

• kinetic energy changing into heat energy

• kinetic energy changing into potential energy

• potential energy changing into kinetic energy

At the top of its swing, a pendulum has zero kinetic

energy. How much potential energy does it have at the

bottom of its swing?

• 0

• 1/2 as much

• 1/4 as much

• maximum

A roller coaster car travels along the track shown in the

diagram above. At which position on the track are the

kinetic and potential energy of the roller coaster car

almost equal to each other?

• Position 1

• Position 2

• Position 3

• Position 4

Which of the following is an example of kinetic energy?

• a stretched rubber band

• a tank of gasoline

• a battery

• a rolling ball

When riding a roller coaster, you go up and down many

hills. When do you have the maximum potential energy?

• at the top of the tallest hill

• at the bottom of each hill

• as you go down each hill

• as you go up each hill

Which of the following is a requirement for work to be

done?

• Object is carried

• Machine is used

• Force is exerted

• Force moves an object