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NEET 2010 (AIPMT, Mains) · Velocity, Momentum & Energy in Flight

Velocity, Momentum & Energy in Flight question from NEET 2010 (AIPMT, Mains)

Q16NEET 2010 · AIPMT · MAINSEasy

Velocity, Momentum & Energy in Flight

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

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Answer: (a)

  1. Speed at maximum height =ucos⁡θ= u\cos\theta.
  2. ucos⁡θ=u2⇒cos⁡θ=12u\cos\theta = \frac{u}{2} \Rightarrow \cos\theta = \frac{1}{2}
  3. So the answer is (a) 60∘60^\circ.
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