A bullet of mass 40gm is fired from a gun of mass 8kg with a velocity of 800 m/s, calculate the recoil velocity of the gun. b. An Astronaut is drifting away from his spaceship. How can he return back to his spaceship using only an aerosol spray? (2+1=3m
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Recoil velocity of gun is -4 m/s .
Given that mass of bullet (m') = 40 gm = (40/1000) = 0.04 kg. Mass of gun (m") = 8 kg. Velocity of bullet after firing (v') = 800 m/s. As bullet and gun are at rest before firing, so velocity of bullet and gun before firing = 0 m/s.
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