Question

if a train train travels with speed 60 km/h for 10 minute and the next distance covered at the speed of 80 km/h in 15 minutes find the average speed
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Answer 1

Answer:

AVG. SPEED = 19.72m/s

Explanation:

Converting speed from km/h to m/s to have the units same

1)60X5/18

 16.6m/s

 SPEED=DISTANCE/TIME

 16.6=D/600                      (10min = 600sec)

 16.6X600 = D

 9960=D

 9600 meter

2)80X5/18

  22.2m/s

SPEED=DISTANCE/TIME

 22.2=D/900                      (15min = 900sec)

 22.2X900 = D

 19980=D

 19980 meter

AVERAGE SPEED

AVERAGE SPEED=TOTAL DISTANCE/TOTAL TIME TAKEN

AVG. SPEED = 9600+19980/600+900

AVG. SPEED = 29580/1500

AVG. SPEED = 19.72m/s

HOPE IT HELPS!!!

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