Work-Physics

Front

What is work in physics?

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied, in the direction of the force. It is measured in Joules (J).

Front

When is work done?

Back

Work is done when a force causes an object to move in the direction of the force. If there is no movement, or if the movement is perpendicular to the force, then no work is done.

Front

Calculate the work done when a force of 15 N moves an object 10 m.

Back

150 Joules (Work = Force x Distance = 15 N x 10 m).

Front

What is the formula for calculating work?

Back

The formula for work is W = F × d, where W is work, F is force, and d is distance.

Front

If a force of 10 N is applied to move an object 5 meters, how much work is done?

Back

50 Joules (Work = 10 N x 5 m).

Front

What information is needed to calculate work done in lifting an object?

Back

The distance the object is lifted and the weight of the object.

Front

If no distance is moved, what can be said about the work done?

Back

If no distance is moved, then no work is done, regardless of the amount of force applied.

Front

What is the unit of work in the International System of Units (SI)?

Back

The unit of work is the Joule (J).

Front

How much work is done when Fred kicks a ball with a force of 20 N to George, who is 5 m away?

Back

100 Joules (Work = 20 N x 5 m).

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy. When work is done on an object, energy is transferred to that object.