Calculating Impulse of a Bouncing Steel Ball | Momentum and Impulse Homework

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Homework Help Overview

The discussion revolves around calculating the impulse of a bouncing steel ball, focusing on its mass, speeds before and after impact, and the application of the impulse-momentum principle.

Discussion Character

  • Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to calculate impulse using the change in momentum formula. Some participants question the direction of the momenta involved in the calculation.

Discussion Status

Participants are engaged in verifying the calculations and discussing the implications of direction in momentum. There is acknowledgment of the original poster's answer, but no explicit consensus on its correctness.

Contextual Notes

There may be assumptions regarding the direction of velocities that are under discussion, which could affect the interpretation of the impulse calculation.

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Homework Statement


A steel ball with mass 0.347 kg falls onto a hard floor and bounces. Its speed just before hitting the floor is 23.6 m/s and its speed just after bouncing is 12.7 m/s. (a) What is the magnitude of the impulse of the ball?


Homework Equations


J=pf-pi


The Attempt at a Solution


J=.347kg(12.7m/s)-.347kg(-23.6m/s)
J=12.6kg*m/s
 
Last edited:
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Please take note of the direction of the momenta that you are considering.
 
Would anybody check this new answer?
 
Looks correct to me :)
 

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