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