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  1. A stone falls freely  under gravity. It covers distances h1, h4 and h3 in the first 5 seconds, the next 5 seconds and the next 5 seconds respectively. The relation between h1, h2 and h3 is
    1. h1 =
      h2
      		 =
      h3
      35
    2. h2 = 3h1 and h3 = 3h2
    3. h1 = h2 = h3
    4. h1 = 2h2 = 3h3
Correct Option: A

∵ h = 1/2 gt²
∴ h1 = 1/2 g(5)² = 125
h1 + h2 = g(10)² = 500
⇒ h2 = 375
h1 + h2 + h3 = g(15)² = 1125
⇒ h3 = 625
h2 = 3h1 , h3 = 5h1
or h1 = h2/3 = h3/5


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