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Grade: 11
        
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)
one month ago

Answers : (2)

Arun
20892 Points
							

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

one month ago
Khimraj
2802 Points
							
initial velocity = ucos\Theta \hat{i} + usin\Theta \hat{j}
final velocity = ucos\Theta \hat{i} 
change in velocity = usin\Theta
Hope it clears......................................... 
one month ago
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