Question

Kindly explain why 4th is not the answer for qno.24

Answer 1

Answer:

In question 24,

Given,

Height = 125 m

a = g = 10 m/s²

Since the body is falling freely , u = 0

To find the time , we use the second equation of motion i.e S = ut + 1/2at²

by substituting the values,

125 = 1/2×10×t²

125 = 5t²

t² = 125 / 5

   = 25

t = √25

 = 5 sec

Hence , the time taken to reach the ground will be 5 seconds.

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