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A train is moving at 72 km/h and passes a platform in 20 seconds. What is the le
A train is moving at 72 km/h and passes a platform in 20 seconds. What is the length of the platform if the train is 180 meters long?
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A train is moving at 72 km/h and passes a platform in 20 seconds. What is the length of the platform if the train is 180 meters long?
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Speed of train = 72 km/h = 20 m/s. Time = 20 s. Distance = Speed × Time = 20 m/s × 20 s = 400 m. Length of platform = 400 m - 180 m = 220 m.
Questions & Step-by-step Solutions
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Q: A train is moving at 72 km/h and passes a platform in 20 seconds. What is the length of the platform if the train is 180 meters long?
Solution:
Speed of train = 72 km/h = 20 m/s. Time = 20 s. Distance = Speed × Time = 20 m/s × 20 s = 400 m. Length of platform = 400 m - 180 m = 220 m.
Steps: 4
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Step 1: Convert the speed of the train from kilometers per hour (km/h) to meters per second (m/s).
Step 2: Use the formula: Speed (m/s) = Distance (m) / Time (s).
Step 3: Calculate the distance the train travels while passing the platform using the formula: Distance = Speed × Time.
Step 4: Subtract the length of the train from the total distance to find the length of the platform.
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