A slow moving truck covers a distance of 210 km at a uniform speed of 35 km/h. How much time does it take? MCQ with Answer and Explanation
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Question #1
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A mechanical wheel has a radius of 7 cm. How many revolutions are required to cover a linear distance of 44 meters?
Correct Answer: Option A
Explanation:
Circumference of the wheel = 2 * (22/7) * 7 = 44 cm = 0.44 meters. Total distance = 44 meters. Number of revolutions = 44 / 0.44 = 100.
Circumference of the wheel = 2 * (22/7) * 7 = 44 cm = 0.44 meters. Total distance = 44 meters. Number of revolutions = 44 / 0.44 = 100.
This question belongs to:
Maths
Time Speed and Distance
Question #2
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A cargo train running at 64 km/h overtakes a cyclist riding at 10 km/h in the same direction in 10 seconds. Find the length of the train.
Correct Answer: Option D
Explanation:
Relative speed = 64 - 10 = 54 km/h = 54 * (5/18) = 15 m/s. Length of train = Relative speed * Time = 15 * 10 = 150 meters.
Relative speed = 64 - 10 = 54 km/h = 54 * (5/18) = 15 m/s. Length of train = Relative speed * Time = 15 * 10 = 150 meters.
This question belongs to:
Maths
Time Speed and Distance
Question #3
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A train traveling at 72 km/h crosses a platform 160 meters long in 18 seconds. Find the length of the train.
Correct Answer: Option A
Explanation:
Speed = 72 * (5/18) = 20 m/s. Total distance in 18 seconds = 20 * 18 = 360 meters. Train length + Platform length = 360 => Train length + 160 = 360 => Train length = 200 meters.
Speed = 72 * (5/18) = 20 m/s. Total distance in 18 seconds = 20 * 18 = 360 meters. Train length + Platform length = 360 => Train length + 160 = 360 => Train length = 200 meters.
This question belongs to:
Maths
Time Speed and Distance
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