Either you have never seen a Rihanna concert or you were completely deprived as a child and teenager, everyone has seen clips of her concerts. In addition to the Man Down, Rude Boys and Umbrellas features a lot of physics. In order for Rihanna to rise from the inside of the stage, a lift must be there to lift her up, literally. this lift features one of Newton's laws. An object in motion stays in motion unless acted upon by an unbalanced force. At the end of the show, confetti is blown all through the arena. The confetti is shot through a confetti cannon which is started by acceleration to get a constant speed.