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1. 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) ucos theta (B) u (C) usin theta (D) (ucos theta - u)

1. 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) ucos theta (B) u (C) usin theta (D) (ucos theta - u)

Grade:11

2 Answers

Arun
25750 Points
4 years ago

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  usinθ and since the projectile loses this velocity, it would have a difference of  usinθ

Khimraj
3007 Points
4 years ago
initial velocity = ucos\Theta \hat{i} + usin\Theta \hat{j}
final velocity = ucos\Theta \hat{i} 
change in velocity = usin\Theta
Hope it clears......................................... 

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