A delivery car handles a total route profile of 360 km. It clears the first half stretch at 45 km/h and the second half at 90 km/h. Find the net average speed. MCQ with Answer and Explanation
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Question #1
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A train running at the speed of 60 km/h crosses a pole in 9 seconds. What is the length of the train?
Correct Answer: Option D
Explanation:
Speed = 60 * (5/18) = 50/3 m/s. Length = Speed * Time = (50/3) * 9 = 150 meters.
Speed = 60 * (5/18) = 50/3 m/s. Length = Speed * Time = (50/3) * 9 = 150 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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If a delivery agent cycles at 15 km/h instead of 11 km/h, he travels 20 km more in the same allotted duration. Find the actual distance covered by him at his lower speed.
Correct Answer: Option B
Explanation:
Let the time duration be t hours. Distance difference = 15t - 11t = 4t = 20 km => t = 5 hours. Distance covered at lower speed = 11 * 5 = 55 km.
Let the time duration be t hours. Distance difference = 15t - 11t = 4t = 20 km => t = 5 hours. Distance covered at lower speed = 11 * 5 = 55 km.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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If a person covers a distance of 120 km in 3 hours, find his speed in meters per second.
Correct Answer: Option A
Explanation:
Speed = 120 / 3 = 40 km/h. Converting to m/s = 40 * (5/18) = 200 / 18 = 11.11 m/s.
Speed = 120 / 3 = 40 km/h. Converting to m/s = 40 * (5/18) = 200 / 18 = 11.11 m/s.
This question belongs to:
Maths
Time Speed and Distance
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