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Q.

A body is projected with velocity 24 ms–1 making an angle 30° with the horizontal. The vertical component of its velocity after 2 s is (g = 10 ms–2)

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a

8 ms-1 upward

b

8 ms-1 downward

c

32 ms-1 upward

d

32 ms-1 downward

answer is B.

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Detailed Solution

Vy = 12 – 20 = – 8ms–1–Ve sign indicates downwards
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