Question

3. Train running at 72 kmph how much distance in meters covered in 15 seconds?

Answer 1

Given:
72 kmph

72 kilometers per hour.

1 kilometer = 1,000 meter

72 km * 1,000 m/km = 72 * 1,000m = 72,000 meters

1 hour = 60 minutes
1 minute = 60 seconds

1 hr * 60 mins/hr * 60 sec/min = 1 * 60 * 60 sec = 3600 seconds

72,000 meters / 3,600 seconds = 20 meters per second

20 mps * 15 seconds = 300 meters.

300 meters is the distance covered in 15 seconds.

Answer 2

72 km per 60 minutes
time in seconds = 60*60
 distance covered in 15 seconds = 72000 m*15/3600  
                                                      = 300 m per 15 seconds