P.6A*: Calculating Work and Power

Front

What is work in physics?

Back

Work is defined as the product of force and distance in the direction of the force. It is measured in Joules (J).

Front

What is the formula for calculating work?

Back

W = F * d, where W is work, F is force in Newtons, and d is distance in meters.

Front

What is power in physics?

Back

Power is the rate at which work is done or energy is transferred. It is measured in Watts (W).

Front

How do you calculate power?

Back

Power (P) can be calculated using the formula P = W / t, where W is work in Joules and t is time in seconds.

Front

What is the unit of work?

Back

The unit of work is Joules (J).

Front

What is the unit of power?

Back

The unit of power is Watts (W).

Front

If a blender performs 3,750 Joules of work in 15 seconds, what is its power?

Back

Power = 3,750 J / 15 s = 250 W.

Front

What is horizontal work?

Back

Horizontal work refers to work done when the force is applied in a horizontal direction, using the formula W = F * d.

Front

What is vertical work?

Back

Vertical work refers to work done against gravity, typically involving height, using the formula W = F * h.

Front

If a force of 500 Newtons is used to push a car 4 meters, how much work is done?

Back

Work = 500 N * 4 m = 2000 J.