1000/48 is 20.83 so the answer would be 20.83 meters/second
<span>The condition alone that is necessary so that the final kinetic energy of the system is zero after the collision is that the
objects must have momenta with the same magnitude but opposite directions.</span>
You measure the total distance the bike travels, and the total time it takes to travel that distance. You then divide the distance by the time
Wave speed = frequency (in Hz) x wavelength (in m) so wave speed = 11 x 0.011 = 0.121 m/s