A playground is on the flat roof of a city school, h = 5.00 m above the street below (see figure). The vertical wall of the building is h = 6.10 m high, to form a 1.1-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching it at an angle of 8 = 53.0° above the horizontal at a point d = 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. (a) Find the speed at which the ball was launched. 18.1 ✔ m/s (b) Find the vertical distance by which the ball clears the wall. 1.99 m (c) Find the horizontal distance from the wall to the point on the roof where the ball lands. 7m
A playground is on the flat roof of a city school, h = 5.00 m above the street below (see figure). The vertical wall of the building is h = 6.10 m high, to form a 1.1-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching it at an angle of 8 = 53.0° above the horizontal at a point d = 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. (a) Find the speed at which the ball was launched. 18.1 ✔ m/s (b) Find the vertical distance by which the ball clears the wall. 1.99 m (c) Find the horizontal distance from the wall to the point on the roof where the ball lands. 7m
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Transcribed Image Text:A playground is on the flat roof of a city school, h = 5.00 m above the street below (see figure). The vertical wall of the
building is h = 6.10 m high, to form a 1.1-m-high railing around the playground. A ball has fallen to the street below, and a
passerby returns it by launching it at an angle of 8 = 53.0° above the horizontal at a point d = 24.0 m from the base of the
building wall. The ball takes 2.20 s to reach a point vertically above the wall.
(a) Find the speed at which the ball was launched.
18.1
m/s
(b) Find the vertical distance by which the ball clears the wall.
1.99
m
(c) Find the horizontal distance from the wall to the point on the roof where the ball lands.
m
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