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  • Concept of Gravitation and Floatation
  • A stone is dropped from a cliff. What will be its speed a...
Multiple choice

A stone is dropped from a cliff. What will be its speed after falling 100 m?

  1. 9.8 m/s

  2. 44.2 m/s

  3. 19.6 m/s

  4. 98 m/s

  5. Zero

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, it is the correct answer. h = 100 m u = 0 v2 = u2 + 2gh = 0 + 2 x 9.8 x 100 v2 = 1960 thus v = 44.2 m/s

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