Question

A projectile is fired with velocity u making angle `theta` with the horizontal. What is the change in velocity( from initial ) when it is at the highest point?

A: `u costheta`
B: `u`
C: `u sintheta`
D: `(u costheta - u)`

Answer 1

Assuming no air resistance, the answer would be C

Explanation:

The thing to note is when the projectile reaches it's highest point, it has lost all of its vertical velocity.

The vertical velocity of this projectile is `usintheta` and since the projectile loses this velocity, it would have a difference of `usintheta`