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April 16, 2014

Homework Help: Physics

Posted by Sara on Wednesday, October 19, 2011 at 1:10pm.

A projectile is fired with an initial speed of 28.0 m/s at an angle of 65 degrees above the horizontal. The object hits the ground 9.5 seconds later.

a) How much higher 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 projectile 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?

Thanks for your help!

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