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April 18, 2014

April 18, 2014

Posted by **Sparkles** on Friday, November 4, 2011 at 9:23am.

- Physics - high School -
**drwls**, Friday, November 4, 2011 at 9:44amRamp length = L/cosA

Acceleration rate = g sin A

Trip time = sqrt (2L/a)

= sqrt(2L^2/(g*sinAcosA]

= 2L*sqrt(1/sin(2A)]

That is a minimum 2A = 90 degrees

A = 45 degrees

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