Physics, asked by Divyaanshdiwan, 10 months ago

On a 120km track, a train travels the first 30 km at a uniform speed of 30km/hr. How fast must the train travel the next 90 km so as to average 60 km/hr for the entire trip?
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Answers

Answered by AliothMerak

1

Answer:

90km/h

Explanation:

Av speed= total distance/total time

60=120/x

x=2

1 hour already travelled therefore 90km travelled in 1 hr

speed=90km/h

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