Concept 4: Work and Power Calculations Test

Front

What is the formula for calculating work?

Back

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

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 do you calculate power?

Back

P = W / t, where P is power, W is work, and t is time.

Front

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

Back

The unit of power is the Watt (W).

Front

If a force of 10 N is applied over a distance of 5 m, how much work is done?

Back

W = F * d = 10 N * 5 m = 50 J.

Front

If 200 J of work is done in 10 seconds, what is the power?

Back

P = W / t = 200 J / 10 s = 20 W.

Front

What does it mean if work is done against gravity?

Back

It means that the force applied must overcome the gravitational force acting on the object.

Front

If a box is pushed with a force of 30 N for 4 m, what is the work done?

Back

W = F * d = 30 N * 4 m = 120 J.

Front

How do you find the distance if you know the work done and the force applied?

Back

d = W / F.

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in energy of that object.