A train passes a static post in 15 seconds. If the speed of the train is 72 km/h, what is the length of the train? MCQ with Answer and Explanation

Question

Share Report Error

A train passes a static post in 15 seconds. If the speed of the train is 72 km/h, what is the length of the train?

A. 280 meters

B. 320 meters

C. 350 meters

D. 300 meters

Answer: Option D

Solution (By JKSSB Mock Tests)

Speed of train = 72 * (5/18) = 20 m/s. Length of train = Speed * Time = 20 * 15 = 300 meters.

This question belongs to: Maths Time Speed and Distance

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Time Speed and Distance Questions

Question #1

Share Report

A train 120 meters long passes a signal pole in 6 seconds. Find the time it takes to completely cross a platform 240 meters long.

A. 16 seconds

B. 18 seconds

C. 20 seconds

D. 22 seconds

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Speed of train = 120 / 6 = 20 m/s. Total distance to pass platform = 120 + 240 = 360 meters. Time required = 360 / 20 = 18 seconds.

This question belongs to: Maths Time Speed and Distance

Question #2

Share Report

A bicycle wheel of diameter 140 cm makes 300 revolutions in one minute. Find the speed of the bicycle in km/h.

A. 75.4 km/h

B. 82.6 km/h

C. 79.2 km/h

D. 88.0 km/h

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Radius r = 70 cm = 0.7 meters. Circumference = 2 * (22/7) * 0.7 = 4.4 meters. Distance in 1 minute = 300 * 4.4 = 1320 meters. Distance in 1 hour = 1320 * 60 = 79200 meters = 79.2 km. Speed = 79.2 km/h.

This question belongs to: Maths Time Speed and Distance

Question #3

Share Report

A high-speed train covers 450 km in 3 hours. Find its speed in meters per second.

A. 38.33 m/s

B. 41.67 m/s

C. 40 m/s

D. 45 m/s

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Speed = 450 / 3 = 150 km/h. In m/s = 150 * (5/18) = 750 / 18 = 41.67 m/s.

This question belongs to: Maths Time Speed and Distance

Explore All Time Speed and Distance MCQs