# An object moves with velocity of 20km/hr in the first 1/3rd of total distance and moves with 60km/hr in the second 1/3rd of total distance. What is average velocity up to 2/3 rd of total distance?

##### 1 Answer

A car cover 1/3 distance with speed 20km/hr and 2/3 with 60km/hr. average speed is 30km/hr.

#### Explanation:

Assume total length=

Average velocity=Total distance up to

where,

**For first #1/3#rd part:**

given that,

**from #(1/3)^(rd)#part to #(2/3)^(rd)#part:**

given that,

Divide equation(2) with equation(1),

We get

From equation(1),

A car cover 1/3 distance with speed 20km/hr and 2/3 with 60km/hr. average speed is