the speed of the ball just before hitting the floor for the first time is 4m/s. On bouncing, the ball loses half its kinetic energy. Show that the speed of the ball as it leaves the floor after the first bounce is 2.8m/s
ok we arnt given the mass of the ball
but wouldn't it just be 0.5[0.5(v^2)] as mass is a constant?
this gives v=0.25(4^2) =4... which is wrong??
how do i do this? so confused
thanks