A passenger coach locomotive 120 meters long passes a clear roadside post marker in 6 seconds flat. Find the time needed to cross an extensions platform 240 meters long. MCQ with Answer and Explanation
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Question #1
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A vehicle covers a specific highway distance at 50 km/h. If it spikes its speed to 60 km/h, it clears the stretch 20 minutes early. Find the total distance.
Correct Answer: Option B
Explanation:
Time difference = 20 minutes = 20/60 = 1/3 hours. Let distance be d. d / 50 - d / 60 = 1/3 => (6d - 5d) / 300 = 1/3 => d / 300 = 1/3 => d = 100 km.
Time difference = 20 minutes = 20/60 = 1/3 hours. Let distance be d. d / 50 - d / 60 = 1/3 => (6d - 5d) / 300 = 1/3 => d / 300 = 1/3 => d = 100 km.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A train 150 meters long completely passes a stone in 15 seconds. Find the speed of the train in km/h.
Correct Answer: Option D
Explanation:
Speed of train = 150 / 15 = 10 m/s. In km/h = 10 * (18/5) = 36 km/h.
Speed of train = 150 / 15 = 10 m/s. In km/h = 10 * (18/5) = 36 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A train tracking at 90 km/h clears a static warehouse tunnel in 20 seconds. If the train length is 150 meters, find the tunnel length.
Correct Answer: Option A
Explanation:
Speed of train = 90 * (5/18) = 25 m/s. Total distance covered in 20 seconds = 25 * 20 = 500 meters. Length of tunnel = 500 - 150 = 350 meters.
Speed of train = 90 * (5/18) = 25 m/s. Total distance covered in 20 seconds = 25 * 20 = 500 meters. Length of tunnel = 500 - 150 = 350 meters.
This question belongs to:
Maths
Time Speed and Distance
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