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October 1, 2014

Homework Help: physics

Posted by physics on Saturday, September 24, 2011 at 6:35pm.

A place kicker must kick a football from a point 36 m (about 39 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 24 m/s at an angle of 50 to the horizontal.
The acceleration of gravity is 9.8 m/s2.

To determine if the ball approaches the crossbar while still rising or while falling, what is its vertical velocity at the crossbar?
Answer in units of m/s

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