A truck moves with a speed 90 km per hour for 20 minutes and at 90 km per hour for next 20 minutes. Find the average speed of the truck.
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sxt=d
first make of truck then
find velocity
displacement ÷time
add both answer
tarchana752:
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v1+v2/2v1v2
90+90/2×90×90
1/90=0.9
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