Physics Fast Facts: Work and Energy

Front

Work is done when a force is exerted on an object, and that object moves __________ to the direction of the net force.

Back

parallel

Front

The formula for rotational kinetic energy is __________.

Back

=1/2Iω²

Front

True/False: Work is a vector quantity.

Back

False

Front

True/False: A conservative force does not change the mechanical energy of a system.

Back

True

Front

__________ is energy stored by a spring.

Back

Elastic potential energy

Front

What is the formula for work done by a constant force?

Back

W = F × d × cos(θ)

Front

Define kinetic energy.

Back

The energy an object possesses due to its motion, given by KE = 1/2mv².

Front

What is gravitational potential energy?

Back

The energy an object possesses due to its position in a gravitational field, given by PE = mgh.

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 conservative and non-conservative forces?

Back

Conservative forces do not dissipate energy (e.g., gravity), while non-conservative forces do (e.g., friction).