Physics A golfer hits a ball which just passes over a tree. At that time the ball travels horizontally with a speed of 38.4 m s -1. The horizontal distance between the tree and the golfer is 57.6 m. (a) Calculate the time of flight for the ball. (b) What is the vertical component of the ball's velocity as it passes the tree? (c) What is the height of the tree?
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A ball is shot from the ground into the air. At the height of 9.1 m, its velocity is
v=(7.6m/s)
i
ˆ
+(6.1m/s)
j
ˆ
v=(7.6m/s)i^+(6.1m/s)j^
, with
i
ˆ
i^
horizontal and j upward. (a) To what maximum height does the ball rise? (b) What total horizontal distance does the ball travel? What are the (c) magnitude and (d) angle (below the horizontal) of the ball's velocity just before it hits the ground?
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