A locomotive train 140 meters long passes a track milestone pole in 7 seconds flat. What is its speed in km/h? MCQ with Answer and Explanation

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A locomotive train 140 meters long passes a track milestone pole in 7 seconds flat. What is its speed in km/h?

A. 80 km/h

B. 68 km/h

C. 72 km/h

D. 76 km/h

Answer: Option C

Solution (By JKSSB Mock Tests)

Speed of train = 140 / 7 = 20 m/s. In km/h = 20 * (18/5) = 72 km/h.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A vessel tracks upstream at 10 km/h and downstream at 18 km/h. Find the net speed of the river current.

A. 4.5 km/h

B. 3.5 km/h

C. 4.0 km/h

D. 5.0 km/h

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Correct Answer: Option C

Explanation:
Speed of river current = (Downstream speed - Upstream speed) / 2 = (18 - 10) / 2 = 8 / 2 = 4 km/h.

This question belongs to: Maths Time Speed and Distance

Question #2

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If a person covers a distance of 180 km in 4 hours, find his speed in meters per second.

A. 13.5 m/s

B. 12.5 m/s

C. 11.5 m/s

D. 14.5 m/s

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Correct Answer: Option B

Explanation:
Speed = 180 / 4 = 45 km/h. Converting to m/s = 45 * (5/18) = 12.5 m/s.

This question belongs to: Maths Time Speed and Distance

Question #3

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A boat can row 12 km/h in still water. If the river current flows at 4 km/h, find the time taken by the boat to row 48 km upstream.

A. 8 hours

B. 4 hours

C. 10 hours

D. 6 hours

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Correct Answer: Option D

Explanation:
Upstream speed = 12 - 4 = 8 km/h. Time taken = Distance / Upstream Speed = 48 / 8 = 6 hours.

This question belongs to: Maths Time Speed and Distance

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