Calculate the magnitude of the linear momen- tum for each of the following cases a) a proton with mass 1.67×10^?27 kg mov- ing with a velocity of 6 × 10^6 m/s. Answer in units of kg · m/s b) a 1.6 g bullet moving with a speed of 371 m/s to the right. Answer in units of kg · m/s c) a 8 kg sprinter running with a velocity of 11.8 m/s. Answer in units of kg · m/s