A person standing on a platform finds that a train moving with velocity, 0.6c takes one second to pass by him. Find (a) the length of the train as seen by the person and (b) the rest length of the train .

Explanation

To solve the problem step by step, we will break it down into two parts: (a) finding the length of the train as seen by the person on the platform and (b) finding the rest length of the train.

### Part (a): Length of the Train as Seen by the Person

1. **Identify the given values**:
- Velocity of the train, \( v = 0.6c \) (where \( c = 3 \times 10^8 \, \text{m/s} \))
- Time taken to pass by the person, \( t = 1 \, \text{s} \)

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