Question

please answer it as fast as possible
This is for class 9 chapter motion​

Answer 1

Answer:

mark as brainlist IF it is helpful to you

Answer 2

Given:-

=>Speed of the car from A to B=30km/h

=>Speed of the car from B to A=20km/h

Let the two speeds be v1 and v2 respectively

To find:-

Average speed of the car

Solution:-

We can see here that the distance travelled by the car in both cases is same.

Thus,when distance travelled is same,then average speed is-----

=>2v1v2/v1+v2

=>(2×30×20)/30+20

=>1200/50

=>24km/h

Thus,average speed of the car is 24km/h.