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Solve work and power problems, RPS

Total questions: 8

Worksheet time: 31mins

Name
Class
Date
1.

How much work do you do when you pull a sled 25 m using 256 N of force?

a)

6400 J

b)

10 J (but 2 sf)

c)

0.098 J

2.

How far can you push a 230 N box using 568 N of force if you do 2568 J of work?

a)

4.52 m

b)

11.2 m

c)

7.8 m

d)

3.2 m

3.

How much force do you have to apply to lift a weight 2.0 m, if you will be doing 267 J of work?

a)

130 N

b)

0.0075 N

c)

530 N

4.

How much power do you have to exert in order to do 308 J of work in 15 s?

a)

21 W

b)

4600 W

c)

0.049 W

5.

How long does it take to exert 267 W of power while doing 2891 J of work?

a)

10.8 s

b)

772000 s

c)

0.0924 s

6.

How much work can you do dragging an object in 35 s, if you are exert 393 W of power?

a)

14000 J

b)

11.22857143

c)

0.089 J

7.

A box weighs 293 N. How high can you lift it if you do 104 J of work? Assume you are lifting it at a constant speed.

a)

2.8 m

b)

0.35 m

c)

30,472 m

d)

You didn't give me enough information to answer this question.

8.

Which of these best predicts the height of a set of the stairs at the end of the teal hallway, from the ground TO THE 1st LANDING?

a)

2.5 m

b)

2.5 cm

c)

205 m

d)

17 m

e)

12 m