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PH 121 6.6

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Richard Datwyler

on 17 May 2018

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Transcript of PH 121 6.6

more examples
For the sake of not getting too far of the
syllabus (which is not a really good reason)
Let us spend some time doing these problems
One of our learning models is teach one another
Let us practice problems in groups today
and have time to present.
It seems we never finish, or give everyone a chance
Today we shouldn't have that problem.
So I would like to do an example,

Then I'll let you work in groups

Pick a person to be voice and present the problem
Let it be someone who hasn't done this yet.
Here are the problems
23, 30, 32, 37, 39, 40, 48, 57
challenge 45

Sam, whose mass is 75 kg, takes off down a 50-m high 10 slope on his jet-powered skis. The skis have a thrust of 200 N. Sam's speed at the bottom is 40 m/s. what is the coefficent of kinetic friction of his skis on the snow?
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