a car traveling in a straight line with average velocity 80km/hfor 2.5h and then with average velocity of 40km/h for 1.5 find total displacement for 4h and average velocity for total trip
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average velocity=total displacement/total time
displacement= velocity× time
average velocity= 80×2.5+40×1.5/3
=200+60/3
=260/3
total displacement=260/3×4
displacement= velocity× time
average velocity= 80×2.5+40×1.5/3
=200+60/3
=260/3
total displacement=260/3×4
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avrage speed for first 2.5 hours :80 kmph
aavrage speed after 2.5 hours :40 kmph
therefore displacement is :260 km
therefore average speed is :65 kmph
aavrage speed after 2.5 hours :40 kmph
therefore displacement is :260 km
therefore average speed is :65 kmph
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