a car travels along a straight line for the first half time with speed 40 kilometre per hour and the second half time with speed 60 km per hour find average speed
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S1 = 40 km/hr
S2 = 60 km/hr
S = S1+ S2
= 100 km/hr
Time = 2 hrs
Average speed = 100/2
= 50 km/hr
haritz:
can u say this answer with full forms pls
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