Energy ACP Review

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field. It is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What are the units for energy?

Back

The units for energy are Joules (J).

Front

What is the work-energy principle?

Back

The work-energy principle states that the work done on an object is equal to the change in its kinetic energy.

Front

How do you calculate work?

Back

Work is calculated using the formula Work = Force x Distance x cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

If a 5 kg ball is dropped from a height of 2 m, how much kinetic energy does it have just before it hits the ground?

Back

100 J

Front

If 1600 Joules of work is needed to move a box 8 meters, what is the force used?

Back

200 N

Front

What happens to the total energy of a system during energy transformations?

Back

The total energy of the system remains constant.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of kinetic energy and potential energy in a system.