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**Newton's Law Homework Question!!**

Question: Peter and John are playing a game of tug-of-war on a frictionless, icy surface. Peter weighs 539 N and John weighs 392 N. During the course of the game, John accelerates toward Peter at a rate of 3.0m/s^2.

a) What is the magnitude of the force that Peter exerts on John?

b) What is the magnitude of the force that John exerts on Peter?

c) What is the magnitude of Peter's acceleration toward John?

d) Sarah decides to john the game as well. Now Peter pulls on Sarah with a force of 45.0 N [E], and John pulls on her with a force of 25.0 N [N]. What is Sarah's resultant acceleration if she weighs 294 N?

--I just don't seem to understand what they're actually asking me to look for in parts a-c. What exactly does magnitude mean? Would I simply see the difference of their forces (by subtraction?)

--Also, because its tug-of-war, that would mean that we could assume one is pulling towards the W and the other the E, correct? Why would Peter accelerate TOWARD John then??

F=ma