A ball is thrown onto a rough floor at an angle θ. If it rebounds at an angle ǿ and the coefficient of restitution e. Neglect the size of the ball. Hint: Show that during impact, the average impulses in the x and y directions are related by 1x = μ1y. Since the time of impact is the same, FxΔt = μFy Δt or Fx = μFy