Q4 Test Review: Impulse, Momentum, and Energy

Front

What is kinetic energy?

Back

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

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state, commonly associated with gravitational potential energy, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is the unit of energy?

Back

The unit of energy is the Joule (J).

Front

How is energy conserved in a closed system?

Back

In a closed system, the total energy remains constant; energy can change forms (e.g., from potential to kinetic) but cannot be created or destroyed.

Front

What happens to potential energy when an object is lifted?

Back

When an object is lifted, its potential energy increases because it is moved to a higher position against the force of gravity.

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy is directly proportional to mass; as mass increases, kinetic energy increases if velocity remains constant.

Front

What is the formula for calculating kinetic energy?

Back

The formula for calculating kinetic energy is KE = 1/2 mv².

Front

What is the formula for calculating potential energy?

Back

The formula for calculating gravitational potential energy is PE = mgh.

Front

What type of energy transfer occurs when a moving object collides with a stationary object?

Back

The type of energy transfer that occurs is called kinetic-kinetic energy transfer.

Front

What is mechanical energy?

Back

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