A gun of mass fires a bullet of mass with a muzzle speed of
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A gun of mass 5kg fires a bullet of mass 50g with a muzzle speed of 400m/s. The gun is initially at rest and no external horizontal forces act during the firing.
(a) Write the momentum conservation equation for the firing process.
(b) Calculate the recoil velocity of the gun.
(c) Explain qualitatively how the calculated recoil velocity illustrates Newton\'s Third Law of Motion.