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Question 391548: I'm not sure how to help my son with this question. Been out of school too long and any help is appreciated.
What is the greater acceleration rate? A runner who can go from 0 m/s to 12 m/s in 10.0 seconds, or a runner who can go from 0 mi/h to 18 mi/h in 10.0 seconds?
Answer by mananth(16946)   (Show Source):
You can put this solution on YOUR website! I'm not sure how to help my son with this question. Been out of school too long and any help is appreciated.
What is the greater acceleration rate? A runner who can go from 0 m/s to 12 m/s in 10.0 seconds, or a runner who can go from 0 mi/h to 18 mi/h in 10.0 seconds?
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When you compare, the units have to be the same in both cases.
In the second one it is 18 mi/h
lets convert this to m/s
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1 mile = 1609.34 meters
1 hour = 3600 seconds
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18 mi /h= (18 * 1609.34) meters /3600 seconds
= 8.046 m/s
one is 12 m/s and the other is 8.046 m/s. in 10 seconds
you can decide I am sure
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m.ananth@hotmail.ca
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