Question

.. A car travels a certain distance with a speed of 50 km/hr.and returns with the
speed of 40 km/h. calculate the average speed of the whole journey.
. A car travels 100 km at the speed of 60 km/hr. and returns with the speed of​

Answer 1

Answer:

To complete 1km distance with speed =50kmhr it tkes time t

1

=

50

1

s

To complete 1km distance with speed =40kmhr it tkes time t

1

=

40

1

s

Average speed=

(1/50)+(1/40)

1+1

=44.44m/s