Question

In punting a football, the kicker tries to maximize both the distance of the kick and...

In punting a football, the kicker tries to maximize both the distance of the kick and its "hang time"--the time that the ball is in the air. A kicker gets off a great punt with a hang time of 6.0 s that lands 60 yards from the kicker.

1. What is the speed of the ball as it leaves the kicker's foot?

2. What is the angle of the ball's initial velocity?

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Answer #1

See it is a question of the football following a projectile path where the quantities given to us are

Time of flight(T) =6 sec

Range = 60 yards

We need to maximise the time of flight as well as the range

Hence the angle has to be 45degree

Hence ucos(theta) =10yards/sec

Hence u =10/cos(theta) =10√2 yards/sec.

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