Answered: A 80 kg person running at 6.9 m/s,…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A 80 kg person running at 6.9 m/s, catches up with a 60 kg person running away from him at 5.7 m/s, and tackles him. What will the speed of the combined mass of two people just after the tackle?

Expert Solution

Step 1

This problem can be solved by using principle of momentum conservation.

Initial momentum of the system of masses will be similar to their final momentum

Mathematically,

$m_{1} v_{1} + m_{2} v_{2} = (m_{1} + m_{2}) v$

v is the final velocity of the masses.

$m_{1}, m_{2}, v_{1}, v_{2}$ are the masses and corresponding velocities respectively.

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