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March 5, 2015

March 5, 2015

Posted by **Mike** on Friday, February 22, 2008 at 4:03pm.

- HELP -
**drwls**, Friday, February 22, 2008 at 4:08pmIf you want it in miles/hr^2, divide 48 miles/hr by 0.3 hours. If you want it in ft/s^2, m/s^2 or g's, you will have to do some conversions

- HELP -
**Damon**, Friday, February 22, 2008 at 4:13pmchange in velocity = (50-12) = 38 miles/hr

change in time = .3 hours

acceleration = (38 miles / hour) / .3 hours

which is:

127 miles/hour^2

Now no one uses miles per hour squared. Hardly anyone uses feet per second squared any more either but since we are evidently not using metric units here, we can just go to feet/s^2

We need to know there are 5280 feet in a mile and that there are 3600 seconds in an hour.

So

127 miles/hr^2 * 5280 ft/mile * 1 hr^2/3600^2 s^2

= 0.0517 ft/s^2

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