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  • Engineering Mechanics Fundamentals
  • The velocity of a body on reaching the ground from a heig...
Multiple choice

The velocity of a body on reaching the ground from a height h, is

  1. 2 $\sqrt{gh}$
  2. $\sqrt{gh}$
  3. $\sqrt{2gh}$
  4. 2g $\sqrt{h}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Using the conservation of energy, potential energy mgh is converted to kinetic energy (1/2)mv^2. Solving for v gives v = sqrt(2gh).

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