A person in an elevator accelerating upwards with an acceleration of $2\,ms^{-2}$ , tosses a coin vertically upwards with a speed of $20\,ms^{-1}$ . After how much time will the coin fall back into his hand ? $(g = 10\,m s^{-2})$
A person in an elevator accelerating upwards with an acceleration of $2\,ms^{-2}$ , tosses a coin vertically upwards with a speed of $20\,ms^{-1}$ . After how much time will the coin fall back into his hand ? $(g = 10\,m s^{-2})$
- A
$\frac{5}{3}\,s$
- B
$\frac{3}{10}\,s$
- C
$\frac{10}{3}\,s$
- D
$\frac{3}{5}\,s$
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