A dog runs east for 21.25 meters. it takes the dog 8.5 seconds to cover this distance. what is the dog's average velocity?
A1.5 m/s east
B2.5 m/s east
C3.5 m/s east
D4.5 m/s east
A1.5 m/s east
B2.5 m/s east
C3.5 m/s east
D4.5 m/s east