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How many minutes does it take a train starting at rest to reach a velocity of 22.0 kmh-1 at an acceleration of 0.2ms-2?
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How many minutes does it take a train starting at rest to reach a velocity of 22.0 kmh-1 at an acceleration of 0.2ms-2?

User Cuado
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1 Answer

2 votes

1 hour = 3,600 seconds .
1 km = 1,000 meters

So 22 km/hr = (22,000/3,600) = 6.111... meters/second

To reach that speed with acceleration of 0.2 m/s², it will take

(6.111... m/s) / (0.2 m/s²) = (30 and 5/9) seconds

= 0.509 minute (rounded)

User Jaumebonet
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