Homework Statement Homework Equations Fnet= Δp/Δt p=mv The Attempt at a Solution p (before) = 0.4 x 5 = 2 p (after) = 0.4 x 3 = 1.2 Δp = 0.8 Δt = 0.2 Fnet= Δp/Δt 0.8/0.2 = 4N Correct answer in textbook is D, I do not understand why?
