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May 25, 2015

Homework Help: Physics

Posted by George on Thursday, September 2, 2010 at 12:34pm.

Help! I've been trying to understand this question for quite some time now and every attempt i make at it i get the wrong answer. maybe i'm just pluging the numbers into the equations wrong, but i always get the wrong answers. if someone can just breakdown the steps for me it would be greatly appreciated.

A projectile is fired with an initial speed of 33.0 m/s at an angle of 15.0 degrees above the horizontal. The object hits the ground 8.0 sec later.
A) how much highter or lower is the launch point relative to the point where the projectile hits the ground?
B) to what maximum height above the launch point does the projectil rise?
C) what is the magnitude of the projectile's velocity at the instant it hits the ground?
D) what is the direction (below +x) of the projectile's velocity at the instant it hits the ground?

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