a train travels some distance with a speed of 30km/h and returns with

1.	a train travels some distance with a speed of 30km/h and returns with a speed of 45km/h .calculate the average speed of the train.
Answer» Answer: 30km/h = 30×1000/1×60×60 m/s =25/3 m/s 45km/h =45×1000/1×60×60 m/s =25/2 m/s First DISTANCE= 25M in 3s Second Distance= 25m in 2s Avg. SPEED= TOTAL s/total t = 25+25/3+2 m/s =50/5 m/s =10 m/s

a train travels some distance with a speed of 30km/h and returns with a speed of 45km/h .calculate the average speed of the train.

Answer»

Answer:

30km/h

= 30×1000/1×60×60 m/s

=25/3 m/s

45km/h

=45×1000/1×60×60 m/s

=25/2 m/s

First DISTANCE= 25M in 3s

Second Distance= 25m in 2s

Avg. SPEED= TOTAL s/total t

= 25+25/3+2 m/s

=50/5 m/s

=10 m/s

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a train travels some distance with a speed of 30km/h and returns with a speed of 45km/h .calculate the average speed of the train.​

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a train travels some distance with a speed of 30km/h and returns with a speed of 45km/h .calculate the average speed of the train.