A stone is dropped from 20 m (g = 9.8 m/s^2). Its speed on reaching the ground is:

  1. 19.8 m/s
  2. 9.9 m/s
  3. 39.6 m/s
  4. 14 m/s
Answer

A) 19.8 m/s

v = 2gh = 2(9.8)(20) = 19.8 m/s. SLO P-11-B-04 · Application

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