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An object is projected with a velocity of 80ms-1 at an angle of 30o to the ...

An object is projected with a velocity of 80ms-1 at an angle of 30o to the horizontal.The maximum height reached is
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  • A 20m
  • B 80m
  • C 160m
  • D 320m
Correct Answer: Option B
Explanation:
max. height = \(\frac{U^2\sin^2\theta}{2g}\)
= \(\frac{80 \times 80 \times \sin^2(30)}{2 \times 10}\)
= 80m

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