Energy Review

Front

What is gravitational potential energy?

Back

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

Front

How do you calculate the height from gravitational potential energy?

Back

Height can be calculated using the formula h = PE / (mg), where PE is gravitational potential energy, m is mass, and g is acceleration due to gravity.

Front

What is the formula for kinetic energy?

Back

Kinetic energy (KE) is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

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

At which point in a pendulum's swing is kinetic energy the greatest?

Back

Kinetic energy is greatest at the lowest point of the swing, where the speed of the pendulum is highest.

Front

What is the unit of measurement for energy?

Back

The unit of measurement for energy is the Joule (J).

Front

What is the relationship between potential energy and height?

Back

Potential energy increases with height; as an object is raised higher in a gravitational field, its potential energy increases.

Front

What is force and how is it calculated?

Back

Force is a push or pull on an object, calculated using the formula F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the unit of measurement for force?

Back

The unit of measurement for force is the Newton (N).

Front

What happens to total mechanical energy in a closed system?

Back

In a closed system, the total mechanical energy (sum of potential and kinetic energy) remains constant.