Unit 4 Energy Final Review

Front

What does the Law of Conservation of Energy state?

Back

Energy cannot be created or destroyed.

Front

The sum of the kinetic and potential energy in a system is known as the system's _____________________ energy.

Back

mechanical.

Front

What type of energy is stored in an object due to its position or height?

Back

Potential energy.

Front

What type of energy is associated with the motion of an object?

Back

Kinetic energy.

Front

What is the formula for calculating gravitational potential energy?

Back

PE = mgh (where m = mass, g = acceleration due to gravity, h = height).

Front

If a 4.0 kg ball is stationary at the top of a hill that is 12.0 meters in height, what is its gravitational potential energy at the top?

Back

PE = mgh = 4.0 kg * 9.8 m/s² * 12.0 m = 470.4 joules.

Front

As a pendulum swings from its highest to lowest position, what happens to its potential and kinetic energy?

Back

The potential energy decreases while the kinetic energy increases.

Front

What is kinetic energy?

Back

The energy an object possesses due to its motion.

Front

What happens to the total mechanical energy in a closed system?

Back

It remains constant, as energy is conserved.

Front

What is the difference between kinetic and potential energy?

Back

Kinetic energy is energy of motion, while potential energy is stored energy based on position.