Amotorist drives north for 35.0 min at 85.0 km/h and then stops for 15.0 min. he then continues north, traveling 130 km in 2.00 h. (a) what is his total displacement? b) what is his average velocity?

(a) Total displacement will be 176.666 km

(b) Average velocity will be 62.3534 km/hr

Explanation:

We have given a motorist drive for 35 minutes at 85 km/hr

We know that 1 hour = 60 minutes

So

So distance covered in 35 minutes = 0.5833×80 = 46.666 km

After he stops for 15 minutes that is 0.25 hour

Then he travel 130 km in 2 hour

(a) So total displacement = 130+46.666 = 176.666 km

(b) Total time t = 0.5833 +0.25 +2 = 2.8333 hour

Average velocity is given by