A stone falls freely under gravity. It covers distances h₁, h₂ 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:
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A stone falls freely under gravity. It covers distances h₁, h₂ 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:

G1 Physics · Accepted Answer

Step 1: From rest, distance in time t is ½gt². Step 2: h₁ = ½g(5²). Step 3: h₂ = ½g(10²−5²)=3h₁, and h₃ = ½g(15²−10²)=5h₁. Thus h₁=h₂/3=h₃/5. Final answer: B.