## Question

A train is moving eastwards with a velocity of 10 m/sec. On a parallel track another train passes with a velocity 15 m/sec eastwards. To the passengers in the second train the first train appears to be moving with a velocity.

### Solution

–5m/sec

= 10m/sec – 15m/sec

= –5m/sec. westward

Because +ve sign is associated with eastward direction.

#### SIMILAR QUESTIONS

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