a car travels along a straight line for first half plane with a speed of 40 km per hour and second half time with a speed of 50 calculate the average speed
rahullamba:
45 is the average speed of the car
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AVG. SPEED = 2v1v2 / v1+v2
= 2*40*50 / 40+50
= 4000/90
= 400/9 = 44.45 km/h
= 2*40*50 / 40+50
= 4000/90
= 400/9 = 44.45 km/h
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