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April 21, 2014

Homework Help: Physics

Posted by Jason on Saturday, September 10, 2011 at 8:26pm.

A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical acceleration of the rocket is given by a_y =( 2.70m/s^3)t, where the +y-direction is upward.

1) What is the height of the rocket above the surface of the earth at t = 10 s?

2) What is the speed of the rocket when it is 345 m above the surface of the earth?

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