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Q.

A bullet is fired from a gun at the speed of 280 ms-1 in the direction 30° above the horizontal. The maximum height attained by the bullet is (g=9.8ms-2, sin 30° = 0.5)

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a

3000 m

b

2800 m

c

2000 m

d

1000 m

answer is D.

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Detailed Solution

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Maximum height,

H=u2sin2θ2g=(280)2×(12)22×9.8=1000m.

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