1. The problem statement, all variables and given/known data A cricket bat strikes a ball of mass 0.16 kg travelling towards it. The ball initially hits the bat at a speed of 25m/s and returns along the same path with the same soeed. Time of impact is 0.003s a)Determine change in momentum of the ball b)Determine FOrce exterted on the ball 2. Relevant equations a) momentum=mass*velocity b)Ft=mv-mu 3. The attempt at a solution What im trying to ask is, given that v is negative to due to the ball returns in opposite direction, and u is positive then, shouldnt the awnser be: (.16)(-25)-(.16)(25)= -8Ns. However, Im confused when the answer shows that it is 8Ns. Why is it so? Does questions like this account for magnitude only? Is it still correct if i put -8 as the awnser?