Peter and john are playing a game of tug-o-war on a frictionless, icy surface. peter wieghs 539 N and john wieghs 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 exerst on peter? C)What is the magnitude of peters acceleration toward john? d) Sarah decides to join the game as well. now peter pulls on sarah with a force of 5.0 N [E], and john pills on her with a force of 25.0 N [N]. What is sarahs resultant acceleration, if she wieghs 294 N. ok so i think i can do D, just with the rules of a right triangle and using f=ma but how do i do abc i am soo confused on the magnitude of the force...please help???