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Worksheets

Work done

Total questions: 16

Worksheet time: 28mins

Name
Class
Date
1.

what is the product of force and displacement?

a)

work

b)

power

c)

energy

2.

what is the unit of work?

a)

Newton

b)

Joule

c)

Watt

d)

meter

3.

what is the formula needed to solve for work?

a)

W=F Δ\Delta x

b)

W=F/ \Delta x

c)

F=W \Delta x

4.

if you push a cart with a force of 60 N for 2 m... how much work have you done

a)

120 J

b)

30 J

c)

120 N

d)

30 N

5.

If 40N of force is applied to Rollo Koster's 10 kg cart over a distance of 50 meters, how much work is done?

a)

8000J

b)

8000N

c)

4000J

d)

2000J

6.
Which of the following is the best example of work being done. 
a)
doing homework
b)
lifting a box
c)
pushing a stationary box
d)
holding a box
7.
In which of these cases is work being done? 
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student carries his chair into another room
d)
A student sits on the carpet
8.

Ahmed is out with his friends. Misfortune occurs and Ahmed and his friends find themselves getting a workout. They apply a cumulative force of 1000 N to push the car 200 m out of the sand. Determine the work done on the car.

a)

2 x 105 J

b)

2.70 x 104 J

c)

3.2 x 10-4 J

d)

3.54 x 105 J

9.

Two people push on a wall with 100 N. The wall doesn’t move. How much work is done?

a)

100J

b)

100N

c)

0J

d)

0N

10.

A student lifts 100 N of books 1 m to his shoulder. He walks forward 10 m to the stairs and goes up 3 m. He walks 20 m forwards to class. How much work has been done to the books?

a)

No work is done

b)

100J

c)

300J

d)

400J

11.

Two people lift a heavy box a distance of 15 m. They use ropes, each of which make an angle of 15 degrees with the vertical. Each person exerts a force of 225 N. How much work is done by the ropes

a)

3.29 x 103 J

b)

6.5 x 103 J

c)

4.0 x 104 N

d)

2.45 x 102 J

12.

An airplane passenger carries a 215-N suitcase up the stairs , a displacement of 4.20 m vertically and 4.60 m horizontally. How much work does the passenger do on the suitcase.

a)

903 J

b)

989 J

c)

976 J

d)

945 J

13.

A sailor pulls a boat a distance of 30.0 m along a dock using a rope that makes a 25 degree angle with the horizontal. How much work does the rope do on the boat if its tension is 255 N?

a)

7.65 x 103 J

b)

6.93 x 103 J

c)

7.65 x 103 N

d)

5.23 x 103 J

14.

A mover loads a 185-kg refrigerator into a moving van by pushing it at a constant speed up a 10.0 m , friction free ramp at an angle of inclination of 11 degrees. How much work is done by the mover on the refrigerator?

a)

1.86 x 103 J

b)

3.45 x 102 J

c)

3.46 x 103 J

d)

1.78 x 104 J

15.

What is the common formula for work?

a)

W=F v cos (angle between the direction of motion and the force)

b)

W=F d cos (angle between the direction of motion and the force)

c)

W=F m cos (angle between the direction of motion and the force)

d)

W=F t cos (angle between the direction of motion and the force)

16.
A child pulls a balloon for 12 m with a force of 1N at an angle of 60 degrees.  How much work does the child do on the balloon?
a)
-10J
b)
-6J
c)
6J
d)
12J