A car travels 20km at a uniform speed of 40km/h and the next 20km at a uniform speed of 60km/h. find its average speed for the entire trip
Answers
Answered by
7
t1=distance/speed
=20/40=1/2
t2=20/60=1/3
total time =1/2+1/3=5/6
avg speed=total distance/total time
=40÷5/6
=40×6/5
=48m/s
=20/40=1/2
t2=20/60=1/3
total time =1/2+1/3=5/6
avg speed=total distance/total time
=40÷5/6
=40×6/5
=48m/s
Similar questions