Work & Power Practice

Work & Power Practice

Open Ended

If someone is applying 28 N of force to move an object 5 m, what is the work done?

W = Fxd

W = 28 x 5

W = 140 J

Open Ended

If someone does 300J of work to move an object 8m, what is the force applied?

F = W/d

F = 300/8

F = 37.5N

Open Ended

If someone applied 85N of force to move and object and did 900J of work, how far did they move the object?

d = W/F

d = 900/85

d = 10.6m

Open Ended

If someone did 68J of work in 90s, what is their power?

P = W/t

P = 68/90

P = 0.75W

Open Ended

How long would it take a 450W motor to do 1000J of work?

t = W/P

t = 1000/450

t = 2.2s

Open Ended

A 950 watt oven is used for 360 seconds. How many joules of work are done?

W = P x t

W = 950 x 360

W = 342,000J