Which of the following are examples of work being done on an object? Choose the 4 that apply.
a
Carrying a box up a flight of stairs
b
Pushing a grocery cart through the store
c
Carrying a bag of groceries to the car
d
Wind blowing against a tree
e
Lifting a bag of groceries
f
Holding a 25 kg barbell over your head
g
Lifting a rock off the ground
h
Pushing on a car that will not move
The examples of work being done on an object are:
a. Carrying a box up a flight of stairs
c. Carrying a bag of groceries to the car
e. Lifting a bag of groceries
g. Lifting a rock off the ground