Small rockets are used to make tiny adjustments in the speeds of satellites. One such rocket has a thrust of 35 N. If it is fired to change the velocity of a 72100 kg spacecraft by 63 cm/s, how long should it be fired?

Answer 1

a = F/m = 35/72100 = 4.85*10^-4 m/s^2.

t = 0.63/4.85*10^-4 = 1297.80 s.