What information is necessary to describe motion scientifically?
a.) The bird flies 10 m toward the ocean in two seconds.
b.) The baseball player throws the ball toward home plate.
c.) The runner travels 100 m in 15 seconds.
d.) The student walks to miles to school.
Choice-'a' gives the most information. It tells us ... or enables us to calculate ... the distance, direction, displacement, average speed, and average velocity.