a train starts from a station with acceleration 0.2 m/s2 on a straight track and then comes to rest after attaining maximum speed on another station due to retardation 0.4m/s2. if total time spent is half an hour, then distance between two stations is {neglect length of train}
1. 216 km
2. 512 km
3. 728 km
4. 1296 km
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i think it might be 216 km
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