Question

In: Physics

A bullet with the mass of 2.5 x 10^-3 kg is shot from a gun with...

A bullet with the mass of 2.5 x 10^-3 kg is shot from a gun with a velocity of 1.2 x 10^2 m/s. (momemtum/impulse problem)
a. What is the impulse applied to the bullet (magnitude and direction)?
b. what is the reaction impulse felt by the gun magnitude and direction)?

Solutions

Expert Solution

During the firing of a bullet, the total momentum of the system(gun + bullet) is conserved as there is no external force acting on the system. As the bullet gains some momentum when it is fired , the gun moves back a little in the opposite direction to make the total momentum the same as it was initially( initial momentum = 0). This is called the recoil of a gun.

Therefore ,the magnitude of impulse(change in momentum) of both bullet and gun will be the same but they will be in opposite directions only.


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