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A body of mass, m is projected vertically upward with a velocity, y. At what...

Physics
WAEC 2024

A body of mass, m is projected vertically upward with a velocity, y. At what position will the potential energy be maximum?

  • A. \(\frac{y}{g}\)
  • B. \(\frac{2y^2}{g}\)
  • C. \(\frac{y^2}{2g}\)
  • D. \(\frac{y^2}{4g}\)
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Correct Answer: Option C
Explanation

At the maximum height, all the kinetic energy will have been converted into potential energy:

mgh = \(\frac{1}{2}\)mv\(^2\)

v = y

gh = \(\frac{1}{2}\)y\(^2\)

h = \(\frac{y^2}{2g}\)

Thus, the potential energy will be maximum at the height given by: \(\frac{y^2}{2g}\)


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JAMB CBT Mobile App 2025 - Free Download
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