A car travels at a speed of 54 km/h. What is its speed expressed in meters per second? MCQ with Answer and Explanation
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Question #1
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A person covers a distance of 120 km at 30 km/h and another 80 km at 40 km/h. Find his average speed for the full journey.
Correct Answer: Option C
Explanation:
Total distance = 120 + 80 = 200 km. Time 1 = 120 / 30 = 4 hours. Time 2 = 80 / 40 = 2 hours. Total time = 6 hours. Average speed = 200 / 6 = 33.33 km/h.
Total distance = 120 + 80 = 200 km. Time 1 = 120 / 30 = 4 hours. Time 2 = 80 / 40 = 2 hours. Total time = 6 hours. Average speed = 200 / 6 = 33.33 km/h.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A train 160 meters long passes a signal pole in 8 seconds. Find the time it takes to completely cross a platform 320 meters long.
Correct Answer: Option A
Explanation:
Speed of train = 160 / 8 = 20 m/s. Total distance to pass platform = 160 + 320 = 480 meters. Time required = 480 / 20 = 24 seconds.
Speed of train = 160 / 8 = 20 m/s. Total distance to pass platform = 160 + 320 = 480 meters. Time required = 480 / 20 = 24 seconds.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A vehicle runs at 30 km/h for 3 hours and 60 km/h for the next 2 hours. Find the average speed for the whole journey.
Correct Answer: Option A
Explanation:
Distance 1 = 30 * 3 = 90 km. Distance 2 = 60 * 2 = 120 km. Total distance = 210 km. Total time = 3 + 2 = 5 hours. Average speed = 210 / 5 = 42 km/h.
Distance 1 = 30 * 3 = 90 km. Distance 2 = 60 * 2 = 120 km. Total distance = 210 km. Total time = 3 + 2 = 5 hours. Average speed = 210 / 5 = 42 km/h.
This question belongs to:
Maths
Time Speed and Distance
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