WorksheetsPT 3.2 WORK AND POWER
Total questions: 21
Worksheet time: 4hrs 30mins
When you apply a force that displaces an object, you have:
done work on that object.
balanced the forces on the object.
broken Newton's First Law of Motion.
conserved the power used.
A 8.6 kg box is pushed across a floor 3.2 m with a force of 5.5 N. How much work is done on the box?
17.6 J
8.7 J
1.72 J
No work is done.
A student carries a 10.5 kg book in her bag. How much work is done on the book bag by the student?
No work is done.
160.65 J
1.46 J
25.8 J
An object of mass 7.8 kg is lifted to a height of 3.3 m. How much work is done on the object?
252.25 J
8.1 J
5.23 J
No work is done.
How much power is required to do 40.2 J of work in 3.3 s?
12.18 W
132.66 W
43.5 W
0.08 W
In order to do 20.5 J of work in 0.46 s, how much power is required?
44.57 W
9.43 W
32.35 W
11.56 W
How much work is done when 114 W of power is used over 0.62 s?
70.68 J
183.87 J
57.62 J
No work is done.
What is needed to calculate work? Check all correct answers.
force
distance
time
mass
