Topic 3 (Energy) Review

Front

What is energy?

Back

The ability to do work.

Front

What is power in terms of energy?

Back

Power is the rate at which work is done or energy is transferred, measured in Watts (J/s).

Front

What is gravitational potential energy?

Back

Energy an object possesses due to its position in a gravitational field, calculated as PE = mgh (mass x gravity x height).

Front

What is kinetic energy?

Back

Energy an object possesses due to its motion, calculated as KE = 1/2 mv² (1/2 x mass x velocity squared).

Front

What is the difference between energy transformation and energy transfer?

Back

Energy transformation involves a change in energy type, while energy transfer involves moving energy from one place to another without changing its type.

Front

At what point does a car have the greatest potential energy on a track?

Back

At the highest point on the track.

Front

At what point does a car have the greatest kinetic energy on a track?

Back

At the lowest point on the track.

Front

If a can is dropped, at which height does it have the least gravitational potential energy?

Back

At 25 cm.

Front

What is the formula to calculate power?

Back

Power = Work / Time.

Front

What is work in physics?

Back

Work is done when a force causes an object to move, calculated as Work = Force x Distance.