Question

Two balls are dropped from heights `h` and `2h` respectively from the earth surface. The ratio of time of these balls to reach the earth is.
A. `1 : sqrt(2)`
B. `sqrt(2) : 1`
C. `2 : 1`
D. `1 : 2`

Answer 1

Correct Answer - A
`t=sqrt((2h)/(g))` or `t prop sqrt(h) rArr (t_(1))/(t_(2))= sqrt((h)/(2h))=1: sqrt(2)`