Question

Magda drives her Jeep through the desert east for 1.5 hours at 60 mile/hr (mph), and then turns around to head back. The truck travels west at 45 mph for 2.0 hour before she stops. Use East as the positive direction. What was Magda’s average velocity (in mph) during her entire trip?

Answer 1

0mph

Step-by-step explanation:

Velocity unless speed is a vector, this means that it also has direction, usually indicated by the sign in a two dimensional line with an starting point that indicates 0. Here moving to the right (east) has a positive direction, and we are indicated that the first distance traveled was +60mph*1,5h=+90miles, then turns around and goes back to the left(west) -45mph*2h=-90miles, then the total distance traveled was 0miles during 3,5hours, then the average speed is 0mi/3,5h=0mph.