Q.

A man runs across the roof of a tall building and jumps horizontally on (lower) roof of an adjacent building. If his speed is 9 m/s and the horizontal distance between the building is 10m and the height difference between the roofs is 9 m, will he be able to land on the next building ? (Take g = 10 m/s2)

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Detailed Solution

Horizontal speed: u = 9m/s
given range: R = 10 m
vertical displacement: h = 9m
 range: R=u2hg=92×910
=91.8=9×1.34=12.06 m
 R>R, therefore, he will be able to land on next building.

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