Question
Your roommate is working on his bicycle and has the bike upside down. He spins the 68.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second.
What is the pebble's speed?
What is the pebble's acceleration?
What is the pebble's speed?
What is the pebble's acceleration?
Answers
bobpursley
speed=distance/time=PI*68cm/.3333sec
acceleration= speed^2/radius
of course, radius is still half diameter.
acceleration= speed^2/radius
of course, radius is still half diameter.
2-5
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