Question

it a car covers half of its joureny with 72km/hr & remaining half with 15m/s. find the avg speed of car​

Answer 1

Answer:

48 km/h

Suppose total distance is 2x km then

time taken in traveling the distance first x will be t1=40/x

and the time taken in traveling the distance second x will be t2=x /60

now the average velocity can be calculated as V=total distance / totaltime=2x/ x/40+x/60

= 2×40×60/40+60

= 48 km/hr