In the figure shown, velocity of the particle at $P \,(g = 10\,m/s^2)$
In the figure shown, velocity of the particle at $P \,(g = 10\,m/s^2)$
- A
$40\,m/s$
- B
$30\,m/s$
- C
$50\,m/s$
- D
$50\,cm/s$
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- [AIPMT 1990]