Question

a ball is allowed to fall freely from certain height .it cover a distance in first second is equal to​

Answer 1

Answer:

  Seconds = 4.9m

Explanation:

As we know that

        S = Vit + ½at^2. a=g

                 OR

       S = Vit + (0.5)gt^2

As Vi = 0 then it becomes

      S= (0.5)gt^2. g = 9.8m/s..... (1)

          Putting values in eq (1).

      S = (0.5)(9.8)(1^2)

      S = (0.5)(9.8) 0.5 = ½

         OR

      S = g/2

      S = 4.9m

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