A trean travels some détense with a speed 30m/h and sreten with a speed of 4.5m/h calcate the average of the trean?
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Answered by
14
Answer:
t1=d/60
it covers d/2 distance with a speed of 45km/h in t2 hours
→t2=d/90
average speed = total distance/total time
=d/(t1+t2)
=1/(1/60+1/90)
=1/(3+2)/180
=180/5=36kmph
Answered by
1
Answer:
19.5 m/h is the answer of your question
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