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Questions  

Time taken by the projectile to reach from A to B is t. Then the distance AB is equal to

a
ut 3
b
3ut2
c
3 ut
d
2ut

detailed solution

Correct option is A

Horizontal component of velocity,uH=ucos⁡60∘=u2∴AC=uHt=ut2and AB = AC sec 30°=ut223=ut/3

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