Kinematics Question 574
Question: A body is projected from the ground with a velocity at an angle of $ 30{}^\circ $ . It crosses a wall after 3 sec. How far beyond the wall the stone will strike the ground? [Take $ \text{g =10 m/}{{\text{s}}^{\text{2}}} $ ]
Options:
A) 50$ \sqrt{2} $
B)70$ \sqrt{2} $
C) 15$ \sqrt{3} $
D)16$ \sqrt{2} $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Required distance from the wall $ =\frac{{{\text{u}}^{\text{2}}}\sin 2\theta }{\text{g}}-\text{u cos}\theta \times \text{t=50}\sqrt{3}\text{m} $
