since the penny is thrown straight up its not going to move forwad with you and the bus since it has no forces pushing on it. If the bus wasn't moving it would land back on your hand
Magnetism is the force or ability of a magnet to attract or repel other magnetic substance encircled in its magnetic field or magnetic circumzone.
Electromagnetism is the process of inducing E.M.F (ElectroMotive Force) in a material due to change in magnetic flux caused due to change in current across a magnet.