JEE Main · PhysicsHard
A body is dropped from a height $h$. Simultaneously, another body is projected vertically upwards with velocity $u$ from the ground. They meet at a height $h/2$. What is the value of $u$?
- A.$\sqrt{gh}$
- B.$\sqrt{gh/2}$
- C.$\sqrt{2gh}$
- D.$\sqrt{gh/4}$
Show correct answer & step-by-step solution
Correct answer: A — $\sqrt{gh}$
Solution
For the falling body, . For the rising body, . Substituting , we get , so .
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