A football punter wants to kick the ball so that it is in the air for 4.5 s and lands 50 m from where it was kicked. Assume that the ball leaves 1.0 m above the ground.
a. At what angle should the ball be kicked?
Express your answer using two significant figures.
b. With what initial speed should the ball be kicked?
Express your answer to two significant figures and include the appropriate units.
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