Thursday
October 2, 2014

Homework Help: physics

Posted by Melissa on Tuesday, October 1, 2013 at 5:56pm.

Help please ! been stuck on this for hours.

A model rocket blasts off and moves upward with an acceleration of 13m/s^2 until it reaches a height of 25m , at which point its engine shuts off and it continues its flight in free fall.

1) What is the maximum height attained by the rocket?
2)What is the speed of the rocket just before it hits the ground?
3) What is the total duration of the rocket's flight?

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