Wednesday

July 23, 2014

July 23, 2014

Posted by **mira** on Thursday, June 14, 2012 at 11:03pm.

- physical -
**drwls**, Friday, June 15, 2012 at 6:28amWithout the facts of problem 16, we have no way of knowing. Besides, how do we know the power was constant? It probably wasn't. Power increases with velocity, at constant thrust.

The average power (in watts) was

Pav = M*g*H/(120 seconds)

H is the height attained (in meters) and M is the mass (in kg), which might have been changing.

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