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In projectile , a particle is projected such that magnitude of velocity at the topmost point is half of the magnitude of initial velocity. What is the angle of projection.

In projectile , a particle is projected such that magnitude of velocity at the topmost point is half of the magnitude of initial velocity. What is the angle of projection.

Grade:11

1 Answers

Manav
17 Points
7 years ago
Firstly, a projectile motion is a combination of horizontal and vertical motion.
At the topmost point of it's trajectory, the particle possess only the horizontal component of it's initial velocity.
So, if the initial velocity is u
Horizontal component of initial velocity = ucos@
And at the topmost point, velocity of particle = u/2 (given)
So, according to the condition given, 
ucos@ = u/2
Hence : @ = 60degree 

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