Homework Help: physics

Posted by Tom on Monday, February 20, 2012 at 3:12pm.

A 690 kg elevator starts from rest. It moves upward for 2.56 s with constant acceleration until it reaches its cruising speed, 1.84 m/s. What is the average power of the elevator motor during this period?
What is the power of the elevator motor during an upward cruise with constant speed?

physics - nick, Monday, February 20, 2012 at 9:57pm
2nd part...(ma)(v0 + 1/2at)

a = 9.8

Havent figured out first part either

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