21. [-/4 Points] DETAILS SERCP9 6.P.001.SOLN. Calculate the magnitude of the linear momentum for the following cases. (a) a proton with mass 1.67 x 10-27 kg, moving with a speed of 4.40 x 106 m/s kg - m/s (b) a 13.5-g bullet moving with a speed of 345 m/s kg m/s (c) a 71.5-kg sprinter running with a speed of 11.5 m/s kg m/s (d) the Earth (mass 5.98 x 1024 kg) moving with an orbital speed equal to 2.98 x 10 m/s. kg m/s Submit Answer