22. A stone is thro stone is thrown...
Question

22. A stone is thro stone is thrown from the top of a tower at op or a tower at an angle of 30° above the horizontal level with a velocity mlsIt strikes the ground after 5 second from the time of projection then the height of the tower (2) 25 m (4) 55 m (1) 20 m (3) 40 m urs poural distances

JEE/Engineering Exams
Physics
Solution
135
4.0 (1 ratings)
( h=-4 t+frac{1}{2} cdot g t^{2} ) ( u_{y}=40 mathrm{A} operatorname{in} 30=20 mathrm{m}_{theta} ) ( begin{aligned} h=20 t &-frac{1}{2} g t^{2} t &=5 text { Dec } end{aligned} ) ( h=100-5 times 25=-25 mathrm{m} ) height ( =25 mathrm{m} )