Consider Two Carts,of Masses M and 2m,at Rest on a Frictionless

Multiple Choice

Consider two carts,of masses m and 2m,at rest on a frictionless air track.If you push the first cart for 3 m and then the other for the same length of distance with the same force,which cart undergoes the smallest change in momentum?

A) the cart with mass m
B) the cart with mass 2m
C) The change in momentum is the same in each case.
D) There is no change in momentum in either cart.
E) Impossible to tell.