Work and Power

Front

What is the formula for calculating power?

Back

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

Front

What is the unit of power?

Back

Watt (W)

Front

What is work in physics?

Back

Work is done when a force causes an object to move. It is calculated as Work (W) = Force (F) x Distance (d).

Front

If you move an object with a force of 10 newtons over a distance of 5 meters, how much work is done?

Back

50 joules (Work = Force x Distance = 10 N x 5 m)

Front

True or False: The farther you move an object, the more work you do.

Back

True

Front

What do simple machines do to make work easier?

Back

They increase the distance over which work is done.

Front

If you do 90 joules of work in 30 seconds, how much power have you generated?

Back

3 watts (Power = Work / Time = 90 J / 30 s)

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy; when work is done, energy is transferred from one system to another.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is stored energy based on an object's position or state, commonly gravitational potential energy, calculated as PE = mgh.