car travels first 10 kilometre in 20 minutes and 10 kilometre in30minutes what is the average speed of the car in metre per second
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Answered by
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Average speed =Total distance / Total time taken
=S1+S2/t1+t2
given:
--------
S1=10km
=10*1000=10000m
S2=10km
=10000m
t1=20min
=20*60=1200sec
t2=30 min
=30*60=1800sec
Average speed =10000+10000/1200+1800
=20000/3000
=6.67m/s
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----------------
=S1+S2/t1+t2
given:
--------
S1=10km
=10*1000=10000m
S2=10km
=10000m
t1=20min
=20*60=1200sec
t2=30 min
=30*60=1800sec
Average speed =10000+10000/1200+1800
=20000/3000
=6.67m/s
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