A vehicle travels half the distance L with speed V1 and the other half with speed V2 what is the average speed.
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Let the vehicle travels from A to B. To calculate average speed we will calculate total distance covered and will divide by time interval in which it covers that total distance.
Time taken to travel first half distance t
1
=
v
1
2
L
=
2v
1
L
Time taken to travel first half distance t
1
=
v
2
2
L
=
2v
2
L
Total time taken=t
1
+t
2
=
2v
1
L
+
2v
2
L
=
2
L
[
v
1
1
+
v
2
1
]
We know that v
av
=Average speed=
totaltime
totaldistance
v
av
=
2
L
[
v
1
1
+
v
2
1
]
L
=
v
1
+v
2
2v
1
v
2
I hope you satisfied
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