A runner covers 100 meters in 11 seconds. Find his approximate speed in km/h. MCQ with Answer and Explanation
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Question #1
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A sound wave travels at a speed of 340 m/s. Find the distance covered by the wave in 0.5 minutes.
Correct Answer: Option D
Explanation:
Time = 0.5 minutes = 30 seconds. Distance = Speed * Time = 340 * 30 = 10200 meters = 10.2 km.
Time = 0.5 minutes = 30 seconds. Distance = Speed * Time = 340 * 30 = 10200 meters = 10.2 km.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A train 120 meters long passes an entry post light in 6 seconds. How many seconds will it require to cross a terminal platform bridge 240 meters long?
Correct Answer: Option A
Explanation:
Speed of train = 120 / 6 = 20 m/s. Total distance to clear platform bridge layout = 120 + 240 = 360 meters. Time required = 360 / 20 = 18 seconds.
Speed of train = 120 / 6 = 20 m/s. Total distance to clear platform bridge layout = 120 + 240 = 360 meters. Time required = 360 / 20 = 18 seconds.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A man walks a certain distance at a speed of 4 km/h and runs back at 16 km/h. Find his average speed.
Correct Answer: Option B
Explanation:
Average Speed = (2 * 4 * 16) / (4 + 16) = 128 / 20 = 6.4 km/h.
Average Speed = (2 * 4 * 16) / (4 + 16) = 128 / 20 = 6.4 km/h.
This question belongs to:
Maths
Time Speed and Distance
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