Can these questions be done on paper along with an explaination please (I believe using the momentum equation p=mv)Answers5) v1= -15.7 cm/s v2= 9.29 cm/s7) 21.7 s8) a. 60 degrees b. 2.5m/s

5) A 4 g object moving to the right at 20 cm/'s makes an elastic head-on collision with a 10 g object moving to the left at 5 cm/'s. Calculate the velocity of each ball after the collision. 7) Skid of weight 440 N is stuck in the middle of a circular frozen pond of radius 5 m. He cannot move because the pond is absolutely frictionless. He happens to have his 2.6 kg physics textbook so he looks for a solution to his problem. Unable to And a solution he throws his physics textbook in a fit a rage. Skid throws it at a velocity of + nus directly away from him. After throwing the book, how long does it take Skid to reach the edge of the pond? 8) In a game of pool, the cue ball with 5 m/'s makes an elastic collision with the 8 ball which is initially at rest. After the collision, the 8 ball moves off at an angle of 30" with respect to the original direction of the cue ball. Assume that each ball has the same mass. (a) Find the direction of motion of the cue ball after the impact. (b) Calculate the speed of each ball after the collision