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October 21, 2014

October 21, 2014

Posted by **Melissa** on Friday, June 15, 2012 at 7:42pm.

A) the total mechanical energy of the toboggan at a relative to b

B) the sped of the toboggan at b

C) the speed of the toboggan at c

- physics -
**Damon**, Friday, June 15, 2012 at 9:14pmE = (1/2) m v^2 + m g h = constant forever in this problem

mass does not matter here, cancels

E = m g (12) forever

m g (12) = (1/2) m v^2 + m g(0) at b

12 * 9.8 = (1/2) v^2 solve for v at b

m g (12) = (1/2) m v^2 + m g (3)

9 * 9.8 = (1/2) m v^2 solve for v at c

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