Part 1 A 29 kg gun is standing on a frictionless sur- face. The gun fires a 57 g

Question

Part 1

A 29 kg gun is standing on a frictionless sur-
face. The gun fires a 57 g bullet with a muzzle
velocity of 315 m/s.
The positive direction is that of the bullet.
Calculate the momentum of the bullet im-
mediately after the gun was fired.
Answer in units of kg · m/s

Part 2

Calculate the momentum of the gun immedi-
ately after the gun was fired.
Answer in units of kg · m/s

Part 3

Calculate the kinetic energy of the bullet im-
mediately after the gun was fired.
Answer in units of J

Part 4

Calculate the kinetic energy of the gun imme-
diately after the gun was fired.
Answer in units of J

Explanation / Answer

p=mv=315x0.057=17.955 k.E.=0.5mv^2=0.5x0.057x315^2=2827.9

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