Question

a bullet of mass 10 g is fired with a rifle. the bullet takes0.003s to move through its barrel and leaves it with a velocity of 300 m/s what is the force exerted on the bullet

Answer 1

Here,

Mass of the bullet, m = 10 g = 0.010 kg
Initial velocity of the bullet, u = 0
Velocity of bullet attained, v = 300 m/s
time taken by the bullet to move through the barrel, t = 0.003 s

Therefore, 
Force is given by,


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