Physics Practice Problems Projectile Motion: Positive Launch Practice Problems Solution: In Canadian football, after a touchdown the team h...

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Solution: In Canadian 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 ft horizontally from the bar in . Football regulations are stated in English units, but convert to SI units for this problem.There is a minimum angle above the ground such that if the ball is launched below this angle, it can never clear the bar, no matter how fast it is kicked. What is this angle?If the ball is kicked at 46.0 above the horizontal, what must its initial speed be if it is just to clear the bar? Express your answer in m/s.What if this speed in km/h.

Problem

In Canadian 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 ft horizontally from the bar in The figure shows the ball kicked from ground level towards the bar, which is 36.0 feet away from the ball and is 10.0 feet above the ground.. Football regulations are stated in English units, but convert to SI units for this problem.

There is a minimum angle above the ground such that if the ball is launched below this angle, it can never clear the bar, no matter how fast it is kicked. What is this angle?

If the ball is kicked at 46.0 above the horizontal, what must its initial speed be if it is just to clear the bar? Express your answer in m/s.

What if this speed in km/h.