Calculate the linear momentum for each of the following cases. (a) a proton with mass 1.67 ✕ 10-27 kg moving with a velocity of 5.04 ✕ 106 m/s straight up. kg·m/s upward (b) a 15.0 g bullet moving with a velocity of 315 m/s to the right kg·m/s to the right (c) a 71 kg sprinter running with a velocity of 6.6 m/s southwest. kg·m/s southwest (d) earth (m = 5.98 ✕ 1024 kg) moving in its orbit with a velocity equal to 2.98 ✕ 104 m/s forward. kg·m/s forward