The speed of a wagon increases from 2.5 meters per second to 9.0 meters per second in 3.0 seconds as it accelerates uniformly down a hill. what is the magnitude of the acceleration of the wagon during this 3.0 second time interval?

the force required to move the cart is divided by three or 33.33 n.

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.