Physics Fast Facts: Work and Energy

Front

What is the term for the energy stored in a multi-object system based on the arrangement of its objects?

Back

Internal energy

Front

What type of energy is possessed by any moving object?

Back

Kinetic energy

Front

When is work done on an object in relation to the direction of the net force?

Back

When the object moves parallel to the direction of the net force.

Front

What is an alternative way to express power in terms of force and velocity?

Back

Power = Fv

Front

How is work defined in terms of energy used per second?

Back

Work is defined as energy used per second, or work done per second.

Front

What is the formula for calculating kinetic energy?

Back

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

Front

What is the relationship between work and energy?

Back

Work is the process of transferring energy to or from an object.

Front

What is the unit of work in the International System of Units (SI)?

Back

The unit of work is the Joule (J).

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the difference between potential energy and kinetic energy?

Back

Potential energy is stored energy based on position, while kinetic energy is energy of motion.