work

What is the unit used to measure work?

• Joule
• Watt
• Newton
• Pascal

A force exerted over a distance to move an object is ______________________.

• power
• work
• momentum
• Watt

In which cases do the work done on the object will be zero (W=0)?

• if d=0

• if Fnet =0

• if the F perpendicular to d

• All of above

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed

Which of the following is the correct unit of the work

• N/m

• kg.m/s

Ali pushed a box with a force of 60N and moved it a distance 6m as shown in the picture. what is the work done by Ali?

• 0j

• 10j

• 60j

• 360j

If you exert a force of 10.N to lift a box over 1 m how much work do you do.

• 11
• 10
• 5
• 20

If you do 40 joules of work lifting a 10N box, how high is the shelf you move it to.

• 400m
• 40m
• 50m
• 4m

If 150 Joules of work is needed to move a box 10 meters, what force was used? 

• 1500 N
• 15 N
• 1.5 N
• 150 N

If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?

• 272 m
• 17 m
• 4.05 m
• 272 cm