Multiple choice

A train moving at speed of 90 km/hr crosses a pole in 7 seconds. Find the length of the train.

  1. 170 m

  2. 165 m

  3. 150 m

  4. 175 m

  5. 160 m
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D Correct answer
Explanation

Convert speed to m/s: 90 km/hr = 90 * (5/18) = 25 m/s. Length of the train = speed * time = 25 m/s * 7 s = 175 m.

AI explanation

To find the length of the train, use the formula distance equals speed multiplied by time. First convert the speed of 90 km/hr to m/s by multiplying by 5/18, giving 25 m/s. Multiply this speed by the crossing time of 7 seconds to get a length of 175 m.

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