A ball is projected with velocity u,at an angle B(beta) to the horizontal towards a smooth wall which approach the ball with velocity v.Find the time of impact. (a)(cos(B)+2v)/(g(4cos(B)+v)) (b)((u cos(B)+2v)u sin(B))/(g(u cos(B)+v)) (c)(2vusin(B))/g(u cos(B)+v) (c)((u cos(B)+2v)u sin(B))/g (g is the acceleration due to gravity.)