Small rockets are used to make small adjust-
ments in the speed of satellites. One such
rocket has a thrust of 42 N.
If it is fired to change the velocity of a(n)
83000 kg space craft by 71 cm/s, how long
should it be fired?
Answer in units of s

Question

Small rockets are used to make small adjust-
ments in the speed of satellites. One such
rocket has a thrust of 42 N.
If it is fired to change the velocity of a(n)
83000 kg space craft by 71 cm/s, how long
should it be fired?
Answer in units of s

nurali · Answer

F = 42 N 
Mass = 83000 kg 
v = 0.71 m/s 

t =  83000 kg * 0.71 m/s * 1/ 42N 
t = 1403 sec