A runner completes a 200-meter race in 25 seconds. Find his speed in km/h. MCQ with Answer and Explanation
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Question #1
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A train passes a milestone in 6 seconds. If the speed of the train is 60 km/h, find the length of the train.
Correct Answer: Option C
Explanation:
Speed of train = 60 * (5/18) = 50/3 m/s. Length of train = Speed * Time = (50/3) * 6 = 100 meters.
Speed of train = 60 * (5/18) = 50/3 m/s. Length of train = Speed * Time = (50/3) * 6 = 100 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A car travels a distance of 420 km at a certain speed. If the speed is increased by 15 km/h, it takes 5 hours for the journey. Find the original speed.
Correct Answer: Option C
Explanation:
New speed = 420 / 5 = 84 km/h. Since new speed is original speed + 15 km/h, the original speed = 84 - 15 = 69 km/h.
New speed = 420 / 5 = 84 km/h. Since new speed is original speed + 15 km/h, the original speed = 84 - 15 = 69 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A train 110 meters long passes a platform 190 meters long in 20 seconds flat. Find the speed of the train in km/h.
Correct Answer: Option A
Explanation:
Total distance = 110 + 190 = 300 meters. Speed = 300 / 20 = 15 m/s. In km/h = 15 * (18/5) = 54 km/h.
Total distance = 110 + 190 = 300 meters. Speed = 300 / 20 = 15 m/s. In km/h = 15 * (18/5) = 54 km/h.
This question belongs to:
Maths
Time Speed and Distance
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