Ann the Astronaut weighs 65.0 kg. She is space walking outside the space shuttle and pushes a 350.0-kg satellite away from the shuttle at 0.70 m/s. What speed does this give Ann as she moves toward the shuttle?
a. 0.13 m/s
b. 3.8 m/s
c. 590 m/s
d. 290 m/s
e. 7.7 m/s
Question 2
A machine gun is attached to a railroad flatcar that rolls with negligible friction. If the railroad car has a mass of 6.35 104 kg, how many bullets of mass 35.0 g would have to be fired at 200 m/s off the back to give the railroad car a forward velocity of 0.56 m/s?
a. 5.1E4
b. 2.0E+3
c. 6.5E+5
d. 5.1E+3
e. 6.5E+4
