a car travels from a to b at a speed of 20km/h and returns at a speed of 70km/h. find the average speed and velocity
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average speed=V1+V2/2
=20+70/2
=90/2
=45Km/h=12.5m/s
average velocity=0
because it returns along its way so it's displacement becomes 0.
nispruhi25:
speed?
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