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

Physics
JAMB 1994
An object is projected with a velocity of 80ms-1 at an angle of 30o to the horizontal.The maximum height reached is
  • A. 20m
  • B. 80m
  • C. 160m
  • D. 320m
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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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