Unit Four Test Review

Front

What is an inelastic collision?

Back

A collision where objects collide and stick together, resulting in a loss of kinetic energy.

Front

At which point is potential energy greatest in a system?

Back

Potential energy is greatest at the highest point in the system, often labeled as point W.

Front

What is the formula for impulse?

Back

Impulse is calculated as the change in momentum, which can be found using the formula: Impulse = Force × Time.

Front

What is the unit for energy and work?

Back

The unit for energy and work is joules.

Front

What two factors does momentum depend on?

Back

Momentum depends on mass and velocity.

Front

Define kinetic energy.

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv².

Front

What is the principle of conservation of momentum?

Back

The principle states that in a closed system, the total momentum before an event is equal to the total momentum after the event.

Front

How do you calculate work done?

Back

Work done is calculated as Work = Force × Distance × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the difference between elastic and inelastic collisions?

Back

In elastic collisions, kinetic energy is conserved; in inelastic collisions, kinetic energy is not conserved.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, commonly associated with height.