Question

I need answer to the question on the image

Answer 1

Heya !!!



here is your answer !!!


when the ball strike on smooth horizontal surface at 20 m / s



then ,




it's velocity is given by formula 2 V


therefore ,


the magnitude of changing velocity is


=> 2 * 20 m / s






=> 40 m / s





hence , option number D is correct !!


thanks !!



have a pleasant day !!!


☺☺