Consider the motion of a car starting from rest and moving 200 metre in 1.5 min. The car retuns back traveling a distance of 180m in 1min .calculate the average velocity and average Speed?
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Let distance from A to B be x
Time for travel from A to B= x/20
Time for travel from B to A= x/30
Hence,speed for total distance 2x is:
30
x
+
20
x
2x
=
5x
2x×60
=24 km\hr
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