Practice portal › Motion in a Plane › Projectile Motion: Velocity, Trajectory and Energy

The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is

Asked in NEET 2010 Mains · Velocity during flight

Answer: (1) 60°

Step-by-step solution

Given: at the highest point the speed is u/2.

Idea: at the top only the horizontal component is left, and that component is u cos θ throughout the flight.

u cos θ=u/2.

cos θ=1/2.

θ=60°.

Why the other options are wrong

More Projectile Motion: Velocity, Trajectory and Energy questionsAll Projectile Motion: Velocity, Trajectory and Energy questions →

Reading this solution needs no sign-in. You only sign in to practise against the clock and keep your progress.

Practise this with a timer