Question

A stone projected at angle ${}^{\prime }{\theta }^{\prime }$ with horizontal from the roof of a tall building falls on the ground after three second. Two second after the projection it was again at the level of projection. Then the height of the building is (g = 10 m/s${}^2$)-

• A. 5m
• B. 25 m
• C. 20 m
• D. 15 m

Answer 1

The correct option is D 15 m

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