Question

6. A body travels a distance of 10 km
with a constant speed of 30 km/h

And then the next 40 km at a
Constant speed of 50 km/h find
the average speed for the whole
Journey​

Answer 1

Answer:

Avg Speed=44.24 km/hr

Explanation:

Average speed=Total Distance/Total time

Total distance=(10+40)km=50km

Total time=t1+t2

t1=60/30×10=20min

t2=60/50×40=48min

Therefore,Total time=20+48=68min=1.13 hour

Then the avg speed=50/1.13=44.24km/hr.