Medium
$A$ train starting from rest accelerates uniformly for $100\,s,$ then comes to a stop with a uniform retardation in the next $200\,s.$ During the motion,it covers a distance of $3\,km.$ Choose the wrong option.
- AIts acceleration is $0.2\,m/s^2$
- BIts retardation is $0.1\,m/s^2$
- CThe maximum velocity is $20\,m/s$
- DThe maximum velocity is $10\,m/s$
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