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OpenStudy (anonymous):
A ball is projected upward at time t = 0.0 s, from a point on a roof 70 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is What is the velocity of the ball when it is above the ground?
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OpenStudy (snowsurf):
Your forgot to provide the initial velocity.
OpenStudy (shamim):
Initial velocity=?
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