Kinematics Question 238
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 it’s [CPMT 2003]
Options:
A) $ 1:\sqrt{2} $
B) $ \sqrt{2} $ : 1
C) 2 : 1
D) 1 : 4
Show Answer
Answer:
Correct Answer: A
Solution:
$ t=\sqrt{\frac{2h}{g}}\Rightarrow \frac{t _{1}}{t _{2}}=\sqrt{\frac{h _{1}}{h _{2}}}=\sqrt{\frac{1}{2}}=\frac{1}{\sqrt{2}} $
