A student carries her backpack up two flights of stairs to class. Is the student doing work?
Question 6
6.
A student picks her backpack up 2 meters off the ground and places it on her shoulders. Is the student doing work?
Question 7
7.
A crane applies a force of 87,250 N to lift a boulder a distance of 25.0 meters. How much work did the crane do?
Question 8
8.
You lift a 50-newton bag of mulch and do 125 joules of work. How far did you lift the bag of mulch?
Question 9
9.
A bulldozer does 56,750 J of work over 18 minutes. How much power does the bulldozer have? Hint: Convert minutes to seconds
Question 10
10.
If a small machine uses a force of 785 N on an object to move it a distance of 100 meters in 20 seconds. What is the power of the machine doing the work?