In U.S. football, after a touchdown the team has the opportunity to earn one mor

Question

In U.S. football, after a touchdown the team has the opportunity to earn one more point by kicking the ball over the bar between the goal posts. The bar is 10.0 ft above the ground, and the ball is kicked from ground level, 36.0 fthorizontally from the bar (the figure http://session.masteringphysics.com/problemAsset/1259937/3/YF-03-48.jpg) ). Football regulations are stated in English units, but convert to SI units for this problem.

If the ball is kicked at 35? above the horizontal, what must its initial speed be if it to just clear the bar? Express your answer in m/s

ATTENTION: IT IS NOT 12.2 m/s, THAT'S THE COMMON ANSWER THAT CIRCULATES ALL OVER THE INTERNET, WITH THE DEGREES AT 45

In U.S. football, after a touchdown the team has the opportunity to earn one more point by kicking the ball over the bar between the goal posts. The bar is 10.0 ft above the ground, and the ball is kicked from ground level, 36.0 fthorizontally from the bar Football regulations are stated in English units, but convert to SI units for this problem. If the ball is kicked at 35? above the horizontal, what must its initial speed be if it to just clear the bar? Express your answer in m/s ATTENTION: IT IS NOT 12.2 m/s, THAT'S THE COMMON ANSWER THAT CIRCULATES ALL OVER THE INTERNET, WITH THE DEGREES AT 45

Explanation / Answer

maximum height of bar = 1o ft = 3.048 meter

maximum height reached is given by

3.048 = v^2*.939/10

v= sqrt(32.46) = 5.697 meters

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