Physics, asked by KingNipunDK, 11 months ago

A train travels from station Z to Y with a speed of 36 km/h.Abd returns to A with a speed of 54 km/h.What is the average speed?


pratyush4211: Please tell ans is 21.6 km/h fatly

Answers

Answered by pratyush4211
5
Take Distance X
Speed is given
Find time in both cases
Add its total distance=2x
Total time=5x/108
Average speed=Total distance/Total time
2x/5x/108

Speed=43.2 km/h
Attachments:

KingNipunDK: Your answer is wrong
KingNipunDK: answer is 12 m/s
pratyush4211: Hey cahnge 43.2 km/h in m/s
KingNipunDK: Oh soory
KingNipunDK: Please so my next questions
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