Calculate the magnitude of the linear momentum for the following cases. (a) a proton with mass 1.67 10-27 kg, moving with a speed of 5.45 x 106 m/s kg ? m/s (b) a 16.0-g bullet moving with a speed of 435 m/s kg ? m/s (c) a 72.5-kg sprinter running with a speed of 11.0 m/s kg ? m/s (d) the Earth (mass = 5.98 x 1024 kg) moving with an orbital speed equal to 2.98 x 104 m/s. kg ? m/s