A train 120 meters long passes a track worker walking at 6 km/h in the same direction in 12 seconds. What is the actual speed of the train? MCQ with Answer and Explanation
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Question #1
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A train 220 meters long passes a signal post in 11 seconds. How long will it take to cross a platform 300 meters long?
Correct Answer: Option B
Explanation:
Speed of train = 220 / 11 = 20 m/s. Total distance to cross platform = 220 + 300 = 520 meters. Time taken = 520 / 20 = 26 seconds.
Speed of train = 220 / 11 = 20 m/s. Total distance to cross platform = 220 + 300 = 520 meters. Time taken = 520 / 20 = 26 seconds.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A cyclist handles 600 meters in exactly 2 minutes. Find his moving velocity in km/h.
Correct Answer: Option A
Explanation:
Time = 2 minutes = 120 seconds. Speed = 600 / 120 = 5 m/s. In km/h = 5 * (18/5) = 18 km/h.
Time = 2 minutes = 120 seconds. Speed = 600 / 120 = 5 m/s. In km/h = 5 * (18/5) = 18 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A truck covers three successive 8 km stretches at uniform speed metrics of 12 km/h, 24 km/h and 24 km/h. Find its net average speed.
Correct Answer: Option D
Explanation:
Total distance covered = 3 * 8 = 24 km. Total time taken = 8/12 + 8/24 + 8/24 = 2/3 + 1/3 + 1/3 = 4/3 hours. Average speed = 24 / (4/3) = 24 * 3 / 4 = 6 * 3 = 18 km/h.
Total distance covered = 3 * 8 = 24 km. Total time taken = 8/12 + 8/24 + 8/24 = 2/3 + 1/3 + 1/3 = 4/3 hours. Average speed = 24 / (4/3) = 24 * 3 / 4 = 6 * 3 = 18 km/h.
This question belongs to:
Maths
Time Speed and Distance
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