A man attempts to push his couch to the left. The man is too weak and the couch does not move. Does the man exert a force on the couch? Select one:
a. No because the couch did not move.
b. Not enough information to determine.
c. No because the man did not pull the couch.
d. Yes because the man pushed on the couch while other forces caused the couch to not nove mu

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

What does the law of conservation of mass state?