Incomplete Momentum bar chart for collision

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    Collision Momentum
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SUMMARY

The discussion centers on calculating the average collision force using an incomplete momentum bar chart for a collision lasting 15 milliseconds. The key equation utilized is Pix + Jx = Pfx, where Jx represents impulse. The correct approach involves determining the change in momentum, which is -8 N, and dividing it by the time duration of 0.015 seconds to find the average force. The final answer should be expressed in Newtons with two significant figures.

PREREQUISITES
  • Understanding of momentum and impulse concepts
  • Familiarity with the equation Pix + Jx = Pfx
  • Basic knowledge of unit conversion, specifically time from milliseconds to seconds
  • Ability to perform calculations with significant figures
NEXT STEPS
  • Study the concept of impulse and its relation to momentum
  • Learn how to construct and interpret momentum bar charts
  • Practice problems involving average force calculations in collisions
  • Explore the implications of significant figures in physics calculations
USEFUL FOR

This discussion is beneficial for physics students, educators teaching mechanics, and anyone interested in understanding collision dynamics and momentum calculations.

chicagobears34
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Homework Statement


The figure (Figure 1) is an incomplete momentum bar chart for a collision that lasts 15ms .

Figure 1: http://session.masteringphysics.com/problemAsset/1384208/4/knight_Figure_09_06.jpg

What is the magnitude of the average collision force exerted on the object?
Express your answer to two significant figures and include the appropriate units.


Homework Equations


Pix+Jx=Pfx


The Attempt at a Solution


I've never seen a momentum bar chart before and we never learned anything like this in class.
i tried -8N because 6-8=-2, but that was wrong
How am I supposed to approach this problem?
 
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-8 is actually the magnitude of change in momentum. You must divide it by the time taken to get the average force.
 
yes, that makes sense and it is correct.
Thanks Sunil!
 

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