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  1. What will be the ratio of the distances moved by a freely falling body from rest in 4th and 5th seconds of journey?
    1. 4 : 5
    2. 7 : 9
    3. 16 : 25
    4. 1 : 1
Correct Option: B

x(4)
 =
g/2 (2 × 4 - 1)
 =
7
x(5)g/2 (2 × 5 - 1)9

[∵ Sn th = u + a/2 (2n - 1) and u = 0, a = g]


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