Kinematics Question 639

Question: For an observer on trolley direction of projection of particle is , while for observer on ground ball rise vertically. The maximum height reached by ball from trolley it’s

Options:

A) 10 m

B)15 m

C) 20 m

D)5 m

Show Answer

Answer:

Correct Answer: B

Solution:

[b] $ 10-\text{v}\cos 60{}^\circ =0\Rightarrow \text{v}\text{=}\text{20 m/s} $

$ \text{H}=\frac{{{\text{v}}^{\text{2}}}\text{s}in^{2}60{}^\circ }{2\text{g}}=15\text{ m} $



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