1) A small, light ball S and large, heavy ball L move toward each other and collide, bouncing apart. (image needed attached in picture) a) Compare the force that S exerts on L and the force that L exerts on S during the collision. b) Compare the time interval to which S experience a force from L to the time interval to which L experiences a force from S. c) Sketch a plausible graph of the force on S from L as a function of time and (another graph) of the force on L from S as a function of time. d) How does the impulse delivered to S compare to the impulse delivered to L? e) How does the momentum change of S compare to the momentum change of L? f) Is the change in the sum of the momentums (momentum S + momentum L) positive, negative, or zero? 2) An object initially at rest explodes into three fragments. The momentum of two of those fragments is show, what is the momentum of the third fragment? (image needed attached in picture) 3) How does rocket propulsion work? (Qualitative answer is all you need here). 4) Emmy has a mass of 75 kg and stands on a 25 kg sled in the middle of a very large frozen lake. There is no friction between the sled and the lake ice. Additionally, there are ten 10 kg steel balls with Emmy. Emmy can throw a ball at a speed of 5 m/s. At t=0, Emmy is at rest, and throws a ball West of her. At ?=3 seconds, Emmy throws a ball south of her. Where is Emmy located at 5 seconds? Use a coordinate system in which North is positive y and East is positive . Emmy starts at the origin.