A mouse jumps off from the 15 th floor of high-rise building and lands 12 m from the building. Assume that each floor is of 3 m height. The horizontal speed with which the mouse jumps is closest to :

Question

A mouse jumps off from the 15 th floor of high-rise building and lands 12 m from the building. Assume that each floor is of 3 m height. The horizontal speed with which the mouse jumps is closest to :, 0, 5 kmph, 10 kmph, 15 kmph

MARKS App · Accepted Answer

Time of fall = 2 h g = 2 × 45 10 t = 3 sec horizontal distance = horizontal velocity × time 12 = v × 3 3$ = 4 × 18 5 km hr - 1 v = 14 . 4 km hr - 1 v ≈ 15 km hr - 1

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