Conservation of Momentum problem.

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Homework Help Overview

The discussion revolves around a conservation of momentum problem involving a bullet and a block. The original poster is attempting to determine the initial velocity of a bullet that becomes embedded in a stationary block after a collision.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss unit conversions and the implications of using different mass units. There is an exploration of the calculations leading to the initial velocity of the bullet, with one participant noting a discrepancy in their result.

Discussion Status

The discussion is ongoing, with participants providing feedback on unit usage and calculations. There is an indication of attempts to clarify the problem setup, but no consensus has been reached on the correct initial velocity.

Contextual Notes

Participants are addressing potential errors in unit conversion and calculation, with one expressing uncertainty about their results. There is a mention of a specific numerical value that was later corrected, indicating a possible misunderstanding of the problem parameters.

Imbadatphysics
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Homework Statement


Im stuck on this question please help. =/
a 50.0g bullet travels right and becomes embedded in a 7.00kg stationary block. the block and embedded bullet moves off at a velocity of 5.00m/s right. what was the initial velocity of the bullet? the answer is 706m/s right.

Homework Equations



The Attempt at a Solution


IMG_20150716_205938.jpg
 
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Watch your units. Try including units when you set up your equation.
 
ohh i see so instead of 50g i convert it to 0.05kg i got 710m/s its still 4m/s off?
 
nvm I am bad sorry for wasting ur time gg it was 35.25 instead of 35
 

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