Phy201
Your 'cq_1_24.2' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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seed 24.2
A steel ball of mass 60 grams, moving at 80 cm / sec, collides with a stationary marble of mass 20 grams. As a result of the collision
the steel ball slows to 50 cm / sec and the marble speeds up to 70 cm / sec.
Is the total momentum of the system after collision the same as the total momentum before?
answer/question/discussion: ->->->->->->->->->->->-> :
m1 v1 +m2 v2 = m1v1 + m2v2
.06kg(.8m/s) + .02kg (0) = .06kg (.5m/s) + .02kg ( .70m/s)
.048 + 0 = .03 + .014
.048= .044
no they are a little different, the marble is moving a bit faster.
#$&*
What would the marble velocity have to be in order to exactly conserve momentum, assuming the steel ball's velocities to be accurate?
answer/question/discussion: ->->->->->->->->->->->-> :
The velocity of the marble would have to speed up to .9m/s to be equal to the momentum of the steel ball.
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about 20 minutes
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