Question

A car travels the first half of the distance between two places at a speed of 40 km/hr and the second half at the speed of 60 km/h. calculate the average speed of the car.​

Answer 1

Answer:

A

car covers the first half of the distance between two places at a speed of 40 km and the second half at 60 km h^-1 . Find the average speed of the car.

Answer 2

Answer:

Let the total distance covered be S km.

Total time taken= S / (2 × 40) + S / (2 × 60)

= 5S / 240 hr

Average speed = S × ( 240/ 5S )

= 48 km/hr

Explanation:

Average speed is V=

time

distance

if a car travels first half with V

1

and second half of distance with V

2

then formula of average velocity is given by

V=

V

1

+V

2

2V

2

V

1

=

60+40

2∗60∗40

=48km/h