Acar travels 10 miles east in 30 minutes. what is its velocity in miles per hour?
a) 20 miles per hour east
b) 3 miles per minute east
c) 0.333 miles per hour east
d) + or - 20 miles per hour depending on direction

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.