Kinematics Question 639
For an observer on trolley direction of projection of particle is horizontal, while for observer on ground ball rise vertically. The maximum height reached by ball from trolley is higher
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} $
BETA
