Energy, Work and Power

Front

What type of simple machine is a bike pedal?

Back

Wheel & Axle

Front

When you rub your hands together on a cold day, what type of energy conversion occurs?

Back

Mechanical energy into thermal energy

Front

What type of energy do we use to cook food?

Back

Thermal energy

Front

Which statement illustrates work done?

Back

A student flicks a paper football and moves it over the edge of a table.

Front

If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?

Back

17 m

Front

What is the definition of work in physics?

Back

Work is done when a force causes an object to move in the direction of the force.

Front

What is the formula for calculating work?

Back

Work = Force x Distance

Front

What is power in the context of energy?

Back

Power is the rate at which work is done or energy is transferred.

Front

What is the unit of power?

Back

Watt (W)

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion.