Question

average speed of a car which cover half distance with a speed of 30 metre per second and other half with a speed of 50 metre per second in equal interval of time​

Answer 1

Ans---------

You take the mean speed S, which is (30 m/s + 50 m/s) / 2 = 40 m/s.

For a distance D, you divide both like this : T = [D/S] = [D / (40 m/s)].

Now you have the number of seconds T it takes for that car to travel any given distance with your specified rules.

i hope it will help u buddy,,,,,,,,,