Question

car travels first 10 kilometre in 20 minutes and 10 kilometre in30minutes what is the average speed of the car in metre per second

Answer 1

Average speed =Total distance / Total time taken
=S1+S2/t1+t2

given:
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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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Answer 2

Explanation:

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