# A car drives north for 35 minutes at 85 km/hr and then stop for 15 mins. The car continues north traveling 130 km in 2 hours. What is the total displacement and average velocity?

##### 1 Answer

Total displacement: **179.6 km**

Average velocity: **63.4 km/h**

#### Explanation:

Since it's travelling in the same direction for the entire duration of its journey, the *total displacement* of the car is simply the distance from the starting point.

In the first part of its journey, the car travelled for **35 minutes** at a speed of **85 km/h**. Convert the time from minutes to hours to get

This means that the car covered

The car stops, then continues along its current direction, covering **130 km** in **2 hours**. The *total displacement* of the car will thus be

The average velocity is simply the total dispalcement divided by the *total time* of travel. In your case, the total time will be

The average velocity is