The figure shows an overhead view of a ball bouncing from a vertical wall without any change in its speed. Consider the change `Deltavecp` in the ball's linear momentum . (a) Is `Deltap_x` positive , negative , or zero ? (b) Is `Deltap` , positive , negative , or zero ? (c ) What is the direction of `Deltavecp` ?

Answer

(a)Zero ; (b) Positive (initial py down y and final py up y ) ; (c ) Positive direction of y.