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Horizontal and Vertical Components of Projectile Motion

Velocity of t...

Question

Velocity of the ball A just after the collision is :

(i + \sqrt{3} j) m / s

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(i - \sqrt{3} j) m / s

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(2 i + \sqrt{3} j) m / s

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(2 i + 2 j) m / s

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Solution

The correct option is A $(i + \sqrt{3} j) m / s$
$v_{A} = 4 sin 30^{o} [cos 60^i + sin 60^j]$
$v_{A} =^i + \sqrt{3}^j$

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