Work and power

What is power?

​​Work and power

​What is the relationship between work and power?

How is the amount of power calculated?

Hotspot

Is work being done in this situation?

No Work is done when a force moves an object over a distance and the movement must be in same direction

Hotspot

Is work being done?

Work calculation

Math Response

How much work is done moving a car 10m using a force of 1500N

Type answer here

Correct Answer: 15000

Deg^°

Rad

Hotspot

Which is the correct set up?

​Work and power

Math Response

A body does 20 joules of work in 5 seconds calulacte thge power ____ watts

Type answer here

Correct Answer: 4

Deg^°

Rad

Math Response

Two girls each weigh 400N climb a rope through a height of 8 m. Girl A takes 20 seconds and girl B takes 50 seconds

Girl A power? ____ watts

Hint Force x Distnce = work

Type answer here

Correct Answer: 160

Deg^°

Rad

Math Response

Two girls each weigh 400N climb a rope through a height of 8 m. Girl A takes 20 seconds and girl B takes 50 seconds

Girl B power? ____ watts

Hint Force x Distnce = work

Type answer here

Correct Answer: 64

Deg^°

Rad

Multiple Choice

How are work and force related?

• Work is force over a distance, Power is the rate of work

• work times force equals power

• Power is how much force it is to do work