Homework Help: Physics

Posted by Jeremiah on Sunday, March 25, 2012 at 5:37pm.

A rifle with a mass of 1.2 kg fires a bullet with a mass of 6.0 (0.006kg). The bullet moves with a muzzle velocity of 600 m/s after the rifle is fired.
a. What is the momentum of the bullet after the rifle is fired?
b. If external forces acting on the rifle can be ignored, what is the recoil velocity of the rifle?

Physics - drwls, Sunday, March 25, 2012 at 6:00pm
a. Momentum = Mbullet x 600 m/s

b) The rifle will have equal and opposite momentum. Divide by the rifle's mass for the recoil velocity.
Physics - hiyfifjk, Monday, September 10, 2012 at 10:22am
From a rifle of mass 4kg,a bullet of mass 50 g is fired with an initial velocity of 35 m s-1 .Calculate the initial recoil velocity of the rifle.

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