Answer for Work and Energy Worksheet No. 10

10. A girl pushes her little brother on his sled with a force of 300 N for 750. m.  How much 

work is this if the force of friction acting on the sled is 

(a) 200 N, 

(b) 300 N?

(a). W = F x D

W = (300 - 200) x 750

W = 100 x 750

W = 75000J

(b). W = F x D

W = (300 - 300) x 750

W = 0 x 750

W = 0. It the sled doesn't move

Answer for Work and Energy Worksheet No. 8

8. Carlos does a chin-up and raises himself 0.8 m.  If Carlos has a mass of 62 

kg, how much work does he accomplish?  

W = F x D

W = 62KG x 0.8

W = 620N x 0.8

W = 496

Answer for Work and Energy Worksheet No. 6

6. What is the weight of a mass of 100 kg? Find the work done in raising a mass of 100 kg 
through a vertical height of 60 m.

W = F x D
W = 100KG x 60
W = 1000 x 60
W = 60000

100 kg ball

Answer for Work and Energy Worksheet No.4

4. A husky dog does 20 kJ of work as he pulls a sleigh with a force of 340 N. Through what 
distance does he pull it?

Work = F x D

20kj = 340n x D

20000 = 340n x D

20000/340 = D

D = 58.8

Answer for Work and Energy Worksheet No.2

2.A tugboat pulls a ship with a constant force of 5000 N, causing the ship to move through 
a harbor. How much work does the tugboat do on the ship if each moves a distance of 3 
km?
  
W = F x D

     W = 5000N x 3km

     W = 5000N x 3000m

     W = 15000000 J