Question

Pa car travel half the distance with a constant velocity of 40m/s the reaming half with a constant velocity of 60m/s . the average velocity of the car in m/s is

Answer 1

Answer:Let total distance be x Km.

40 km goes in 1 hr.

so, x/2   ....  x/80 hr.

Rest x/2  ....  x/120 hr.

so avg. velocity = x÷(x/80+x/120) km/.hr

                          = 48 km/hr