1. A student drives 40 km south in an attempt to get to a science fair competition before realizing he missed the exit. He turns
around and drives back north 15 km before arriving. The total time of travel was 0.75 hr. What is his speed? What is his
velocity?
2. A bus leaves Houston at 6:00 am headed toward Austin at a constant speed of 54.3 miles/hour. If Austin is located 190 miles west of Houston, approximately when will the bus arrive in Austin?
3. A girl rides her moped 5 km east and then turns around and rides 2 km west. The entire trip takes fifteen minutes. What are
her average speed and velocity?
