phys_1_-_practice_-_momentum (1)

# phys_1_-_practice_-_momentum (1) - Problem 1 The recoil...

This preview shows pages 1–2. Sign up to view the full content.

The recoil momentum of a rifle that kicks is (more than) (less than) (equal to) the momentum of the bullet it fires. If the velocity of the bullet (m=0.025g) is 360 m/s, and the rifle has a mass of 3.2 kg, (a) What is the initial momentum of the rifle and bullet (before firing)? (b) What is the final momentum of the rifle and bullet (after firing)? (c) What is the final momentum of the bullet? (d) What is the final momentum of the rifle? (e) What is the recoil velocity of the rifle? Suppose you are traveling in a bus (m = 2000 kg) at highway speed (25 m/s) on a nice summer day and the momentum of an unlucky bug (m = 0.005 kg traveling directly at your bus with a speed of 2 m/s) is suddenly changed as it splatters onto the front window (yuck). (a) Compared to the force that acts on the bug, how much force acts on the bus? (more) (the same) (less) (b) The time of impact ( t) is the same for both the bug and the bus. Compared to the impulse on the bug, this means the impulse on the bus is (more) (equal) (less) in

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 02/07/2011 for the course BIOS 101 taught by Professor Matthews during the Spring '11 term at DeVry Austin.

### Page1 / 2

phys_1_-_practice_-_momentum (1) - Problem 1 The recoil...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online