Question

please answer fast and correctly and answer with expleatian and spammers no spamming in my question please...​

Answer 1

20m/s,7.69m/s

Explanation:

1) 144/2=72km/hr

72×5/18=20m/s

2)average speed= total diatance/time taken

=50+25+25/8+3+2

=100/13

=7.69m/s approx..

hope it helps you

Answer 2

Answer:

Please forgive if the answer is wrong

Explanation:

1.   To find : Average speed of train

We know that Average speed = Total distance / Total time

Therefore, 144/2

= 72kmph

To change km/h to m/s we have to divide by 3.6 (5/18)

Therefore Average speed = 20 m/s

2.   We know that Average speed = Total distance / Total time

Therefore, 100 / (8+3+2) = 100 / 13

= 7.69 m/s

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