Question

8. We drive a distance of 1 km at 16 km/h. Then we drive an additional distance of 1 km at 32 km/h. What is our average speed?

Answer 1

Speed=distance/time
16=1/T
T=1/16.
Average speed=total distance /total time
A.s.=1+1/1÷16+1÷16
A.s.=16/1
A.s.=16.
So,average speed will be 16 km/hr

Answer 2

sol- first we find time taken to complete first 1km = 1/16h
then,find time taken to complete second 1km =1/32h
Average speed= total distance travel /total time taken
》1+1/1/16+1/32
》2×32/3
》64/3
》21.33km/h Answer --21.33km/h