6 points + Brainliest asap! If you double the amplitude of a box on a spring, how would that affect the acceleration at maximum displacement?

The acceleration would double.

The acceleration would remain the same.

The acceleration would triple.

The acceleration would be cut in 1/2.

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.