Work and Energy Flashcard

Front

What does the law of conservation of momentum state?

Back

The momentum of any closed, isolated system does not change.

Front

What is a closed system in terms of mass?

Back

A system which does not gain or lose mass.

Front

What is the equation for work done?

Back

Work = Force x Distance

Front

How much work is done against gravity if a climber weighing 660 N climbs to the top of a 20 m cliff?

Back

13,200 J

Front

What does the equation FΔt = pf − pi represent?

Back

Impulse-momentum theorem

Front

Define work in physics.

Back

Work is done when a force causes displacement.

Front

What is the unit of work?

Back

Joule (J)

Front

What is kinetic energy?

Back

The energy an object possesses due to its motion.

Front

What is the formula for kinetic energy?

Back

KE = 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.