(Bouncing Concept Check 1.5 (a) The following diagram shows a ball being dropped at a height h onto a ramp with incline a. The ball then bounces with the same angle # that it originally made with the ramp, with the same velocity V = :/2gh at which it landed, and lands at the point P down the ramp. A falling ball h P (1) Prove that the displacement vector of the projectile is given by Vt sin 2a r(t) = Vt cos Za - 1