A man is running with constant speed along a circular path of radius $2 \sqrt 2\, m$. He completes $1$ round in $10\, second$. Find instantaneous speed at $2.5 \,sec.$
A man is running with constant speed along a circular path of radius $2 \sqrt 2\, m$. He completes $1$ round in $10\, second$. Find instantaneous speed at $2.5 \,sec.$
- A
$\frac{\sqrt 2 \pi}{5} m/s$
- B
$\frac{2 \sqrt 2 \pi}{5} m/s$
- C
$\frac{2 \sqrt 3 \pi}{5} m/s$
- D
$\frac{5 \sqrt 2 \pi}{5} m/s$
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- [AIPMT 1990]