Work, Power and Energy Flashcard Review

Front

What is the unit used to measure power?

Back

Watt

Front

How much work is done when a 50N block is lifted 10 m?

Back

500 J

Front

How much kinetic energy does a 50kg person running at 7m/s have? (Use KE = (0.5)(m)(v^2))

Back

1225 J

Front

What is the definition of power?

Back

The rate at which work is done (how fast work is done)

Front

What is work?

Back

When the object moves in the same direction in which the force is exerted.

Front

What is the formula for calculating work?

Back

Work = Force x Distance

Front

What is the relationship between work and energy?

Back

Work is the transfer of energy.

Front

What is the formula for calculating kinetic energy?

Back

KE = (0.5)(m)(v^2)

Front

What is the formula for calculating potential energy?

Back

PE = mgh (where h is height)

Front

What is the definition of kinetic energy?

Back

The energy an object has due to its motion.