Question

A ball is dropped from a particular height then, the ratio of distance covered by ball in 5th and 3rd second is O 5:9 5:3 9:5 3:5​

Answer 1

Answer:

Distance covered in nth second,

∝n2−(n−1)2

∝n2−[n2+1−2n]

∝2n−1

n=2→2(2)−1=3

n=3→2(3)−1=5

n=5→2(5)−1=9

3:5:9