Question

A
speed dodala
22. A train travels with a speed of 60 km In from station
to station B and then comes back with
from station B to station A.
tind :
average speed
b) The of average velocity of the train​

Answer 1

Answer:

Let the distance A and B be x km

Speed while going =60 kmph

∴ time required to go =

60

x

hr

Speed while returning =80 kmph

∴ time required to return =

80

x

hr.

∴ total time required =(

60

x

+

80

x

)hr=

240

7x

hr.

And, total distance travelled =2x km

∴Average velocity=

240

7x

2x

kmph=68.57kmph

I hope it helps you

please like and follow me