# An automobile traveling 90 km/h overtakes a 1.5-km-long train traveling in the same direction on a track parallel to the road. The train speed is 70 km/h, - how long does it take the car to pass it - how far will the car have traveled in that time?

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An automobile traveling 90 km/h overtakes a 1.5-km-long train traveling in the same direction on a track parallel to the road. If the train's speed is 70 km/h,

(a) how long does it take the car to pass it, and

(b) how far will the car have traveled in the time?

An automobile traveling 90 km/h overtakes a 1.5-km-long train traveling in the same direction on a track parallel to the road. If the train's speed is 70 km/h,

(a) how long does it take the car to pass it, and

(b) how far will the car have traveled in the time?

##### 1 Answer

Oct 21, 2016

#### Explanation:

The velocity of the car relative to the train =

To pass the train it needs to cover a distance of 1.5 km.

Relative to a stationary observer the distance the car travels is given by: