Which of the following are examples of work being done on an object? Choose all 4 that apply.
a
lifting a bag of groceries
b
pushing a grocery cart through the store
c
wind blowing against a tree
d
carrying a bag of groceries through the store.
e
pushing on a car that will not move
f
carrying a box up a flight of stairs
g
lifting a rock off the grounnd
h
holding a 45 kg barbell over your head
a) lifting a bag of groceries
b) pushing a grocery cart through the store
e) pushing on a car that will not move
f) carrying a box up a flight of stairs