Suppose the spring constant or force constant of the spring is 32.0 N/m and a total of 2.0 kg hangs at the bottom. The mass is smacked upwards from its rest position so that it rises up by 0.40 m before it starts back down. What is the acceleration of the mass at either end of its motion

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.