If a body covers first half of its journey with uniform speed `v_(1)` and the second half of the journey with uniform speed `v_(2)`. Then the average speed is

If a body covers first half of its journey with uniform speed v_(1) and the second half of the journey with uniform speed v_(2) . Then the average speed during whole journey.

A car complete the first half of its journey with speed v_(1), and the rest half with speed v_(2). The average speed of the car in whole journey:

A person travels along a straight road for the first half length with a constant speed v_(1) and the second half length with a constant speed v_(2) . The average speed V is:

A girl travels along a straight road due east for the first half distance with speed v_(1) and the second half distance with speed v_(2) . What is the average speed of the girl ?

If a particle travels the first half distance with speed v_(1) and second half distance with speed v_(2) . Find its average speed during journey.

If a particle travels the first half distance with speed v_(1) and second half distance with speed v_(2) . Find its average speed during journey.

A car moves a distance of 200m. It covers the first half of the distance at a speed of 40km//h and the second half of the distance at speed v. The average speed is 48km//h . Find the value of v.

A person travels along a straight road due east for the first half distance with speed v_1 and the second half distance with speed v_2 , the average speed of the person is