SATHEE: Kinematics Question 513

Kinematics Question 513

Question: A particle is projected from point $O$ with velocity $u$ in a direction making an angle $α$ with the horizontal. At any instant is position is at point $p$ at right angles to the initial direction of projection, it’s velocity at point $p$ it’s

Options:

A) $u \tan α$

B) $u \cot α$

C) $u c o s e c α$

D) $u \sec α$

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Horizontal velocity at point ‘[O’=u cos $α$

Horizontal velocity at point ‘P’=v sin $α$

In projectile motion horizontal component of velocity remains constant throughout the motion

$∴ v \sin α = u \cos α$

$\Rightarrow v = u \cot α$

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Kinematics Question 513

Question: A particle is projected from point O with velocity u in a direction making an angle α with the horizontal. At any instant is position is at point p at right angles to the initial direction of projection, it’s velocity at point p it’s

Options:

Answer:

Solution:

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Question: A particle is projected from point $O$ with velocity $u$ in a direction making an angle $α$ with the horizontal. At any instant is position is at point $p$ at right angles to the initial direction of projection, it’s velocity at point $p$ it’s