Speed amplifier. In the figure block 1 of mass m slides along an x axis on a frictionless floor at speed 0.215 m/s. Then it undergoes a one- dimensional elastic collision with stationary block 2 of mass m = 0.767 m. Next, block 2 undergoes a one-dimensional elastic collision with stationary block 3 of mass m3 = 0.429 m. (a) What then is the speed of block 3? Are (b) the speed, (c) the kinetic energy, and (d) the momentum of block greater than, less than, or the same as the initial values for block 1? (a) Number i (b) greater (c) less (d) less Units 3 x