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September 1, 2014

Homework Help: physics

Posted by rick on Monday, February 14, 2011 at 7:47pm.

A 3Kg projectile is fired straight upward from earth's surface with a speed that is one-fourth the escape speed. Neglecting air resistance.


a) What is the Kinetic energy of this projectile when it is launched?
b) what is the gravitational potential energy of this projectile when it is launched?
c) what is the total mechanical energy of this projectile?
D) what is the highest altitude reached by this projectile, measured from the earth's surface.

Now I know how to solve part A, and part c is part A + part B, I know part B

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