MESSAGE MY INSTRUCTOR FULL SCREEN PRINTER VERSION «BACK Chapter 09, Problem 046

Question

MESSAGE MY INSTRUCTOR FULL SCREEN PRINTER VERSION «BACK Chapter 09, Problem 046 Your answer is partially correct. Try again. A 5.0 kg mess kit sliding on a frictionless surface explodes into two 2.5 kg parts, one moving at 4.4 m/s, due north, and the othe at 7.8 m/s, 370 north of east. What is the original speed of the mess kit? um UnitsT m/s the tolerance is +/-5% SHOW HINT LINK TO TEXT Question Attempts: UnlimitedSAVE FOR LATERSUEHTT ANSWER dy Wiley & Sons. Inc. All Rights Reserved. A Division of Privacy Policy I

Explanation / Answer

Here,

let the original mess kit has velocity v

Using conservation of momentum

2.5 * 4.4 j + 2.5 * 7.8 * (cos(37 degree) i + j * sin(37 degree)) = 5 * v

v = 15.6 i + 22.74 j m/s

original speed of the mess kit = sqrt(15.6^2 + 22.74^2)

original speed of the mess kit = 30 m/s

the original speed of the mess kit is 30 m/s

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