U5 Review: Work, Power, Energy, Simple Machines

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) × Distance (d)

Front

What is the unit of work?

Back

The unit of work is the Joule (J).

Front

How do you calculate power?

Back

Power (P) = Work (W) / Time (t)

Front

What is the unit of power?

Back

The unit of power is the Watt (W).

Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force.

Front

Name the six types of simple machines.

Back

Lever, Inclined Plane, Wedge, Screw, Pulley, Wheel and Axle.

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum.

Front

How does a pulley make work easier?

Back

A pulley changes the direction of the input force and can also change the amount of force needed.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help lift objects with less effort.

Front

What is the difference between kinetic energy and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on an object's position.