Suppose I am stationary in space (no velocity). My body is straight. There is a stationary ball right beside me (also no velocity). Then an accelerating platform hit my feet and the ball from under. Now the ball and I are in contact with the platform constantly and accelerate at the same rate as the platform does (is this right?). It would be like I am standing on the platform. So: 1. If I Jump from the platform, would I land back on the platform? 2. If I pick up the ball on the platform, would I feel that it is heavy? 3. If I pick up the ball from the platform and let go of it, would it land back on the platform?