If at any point on the path of a projectile its velocity is $u$ at inclination $\alpha$ then it will move at right angles to former direction after time
If at any point on the path of a projectile its velocity is $u$ at inclination $\alpha$ then it will move at right angles to former direction after time
- A
$\frac{u}{g \cos ec \alpha}$
- B
$\frac{u}{g \sin \alpha}$
- C
$\frac{u}{g \cos \alpha}$
- D
$\frac{u}{g \sec \alpha}$
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