Question
Question: The speed of a projectile when it is at its greatest height is \(\frac{1}{2}\) times its initial spe...
The speed of a projectile when it is at its greatest height is 21 times its initial speed. The angle of projection is –
A
300
B
600
C
450
D
tan–1(3/4
Answer
600
Explanation
Solution
Q u cosq = 2u ̃ cosq = 21 ̃ q = 600.