Type the correct answer in the box.
What's the force of a pitching machine on
baseball?
Baseballs pitched by a machine have a horizontal velocity of 30 meters/second. The machine accelerates the baseball from 0 meters/second to 30
meters/second in 0.5 seconds. If a baseball has mass of 0.15 kilograms, the force the machine exerts is
newtons Use
ma, where
a=v-u
—-
t
