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A placekicker is about to kick a field goal. The ball is 21.6 m from the goalpost. The ball is kicked with an initial velocity
A placekicker is about to kick a field goal. The ball is 21.6 m from the goalpost. The ball is kicked with an initial velocity of 18.4 m/s at an angle above the ground. Between what two angles, 1 and 2, will the ball clear the 2.56-m-high crossbar? Give your answers as (a) the smaller angle and (b) the larger angle. (Hint: The following trigonometric identities may be useful: sec = 1/(cos ) and sec2 = 1 + tan2.)
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