- How does something move when it’s falling through the air?
- What exactly happens when you throw a ball up and it falls back down?
Before we leave this chapter behind and start getting into the real meat of physics, I’d like to discuss one more topic: falling objects. This will complete our picture of simple motion and set the stage for the chapter on Newton’s Laws.
Imagine that you hold a ball in your hand. Picture one that you feel familiar with — a baseball, or a tennis ball, or your dog’s little red plastic chew ball (better yet, pick up an actual object and use that instead). Now imagine holding that ball out in front of you and letting go.
If you’ve read along carefully so far, you should feel quite confident in describing the ball’s motion: it starts with no velocity, then accelerates downwards. Easy.