Question

A train travels with a speed of 60kmph from station A to station B and then comes back with a speed of 80kmph from station B to station A. Find :
a. The average speed b. The average velocity

Answer 1

Answer:

Avg speed formula bcz train is travelling same distance so V1+V2/2

Answer 2

Answer:

Let the distance A and B be x km

Speed while going =60 kmph

∴ time required to go =60x​hr

Speed while returning =80 kmph

∴ time required to return =80x​hr.

∴ total time required =(60x​+80x​)hr=2407x​hr.

And, total distance travelled =2x km

∴Average velocity=2407x​2x​kmph=68.57kmph

Explanation:

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