Physics Review: Work Energy Power Test

Front

What is the physics definition of work?

Back

The force exerted on an object causing it to move.

Front

Define chemical potential energy.

Back

Energy stored in the chemical bonds of a substance.

Front

Calculate the work done when a 300 N force is used to lift a 50 kg object vertically by 7 meters.

Back

2100 J.

Front

What is the law of conservation of momentum?

Back

Total momentum of an isolated system remains constant if no external forces act on it.

Front

A machine has a power output of 800 W. Determine the time it takes for the machine to perform 6000 J of work.

Back

7.5 seconds.

Front

What is the formula for calculating work?

Back

Work = Force x Distance.

Front

Define kinetic energy.

Back

The energy an object possesses due to its motion.

Front

What is the formula for kinetic energy?

Back

Kinetic Energy = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

The energy stored in an object due to its position or configuration.

Front

What is the formula for gravitational potential energy?

Back

Potential Energy = mgh, where m is mass, g is acceleration due to gravity, and h is height.