1. A 13-g bullet is fired from a 3.33-kg rifle. After the bullet leaves the rifl

Question

1. A 13-g bullet is fired from a 3.33-kg rifle. After the bullet leaves the rifle, it moves at a speed of 291 m/s. What is tA 13-g bullet is fired from a 3.81-kg rifle. After the bullet leaves the rifle, it moves at a speed of 309 m/s. What is the magnitude of the impulse imparted on the rifle?

2. A 13-g bullet is fired from a 3.81-kg rifle. After the bullet leaves the rifle, it moves at a speed of 309 m/s. What is the magnitude of the impulse imparted on the rifle?

Please include explanations and calculations. Thank you!

Explanation / Answer

1) A 13-g bullet is fired from a 3.33-kg rifle. After the bullet leaves the rifle, it moves at a speed of 291 m/s. What is the magnitude of the impulse imparted on the rifle?

Change in momentum of bullet = 13*291/1000 - 0 = 3.783 kg m/s

hence change in momentum of 3.33 kg rifle. So the impulse imparted on the rifle = change in momentum of rifle = 3.783 Ns.

2) A 13-g bullet is fired from a 3.81-kg rifle. After the bullet leaves the rifle, it moves at a speed of 309 m/s. What is the magnitude of the impulse imparted on the rifle?

Change in momentum of bullet = 13*309/1000 - 0 = 4.02 kg m/s

hence change in momentum of 3.81 kg rifle. So the impulse imparted on the rifle = change in momentum of rifle = 4.02 Ns.

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