CHAPTER 1 GOING UP COMING DOWN Diego swings the bat With a loud crack he hits the baseball The ball soars into the air The ball’s path makes an arc Soon the ball starts to come down All sports involve gravity in one way or another
Moments later it hits the ground in the outfield There is a famous saying What goes up must come down But why It happens because of gravity Gravity affects all objects It pulls them toward one another We cannot see gravity Most of the time we don’t even think about it But gravity is an important part of everyday life
