When you're sitting in a moving bus and look out the window, the trees seem to be moving backwards. But are they really moving?
🤔 Why do stationary objects appear to move when we're the ones moving?
Think about: Motion is relative. You feel like you're stationary because you're moving with the bus. The trees are stationary relative to ground, but moving relative to you.
Observation 2: The Falling Leaf
Watch a leaf falling from a tree. Does it fall straight down? Why does it zigzag?
🤔 What forces are acting on the leaf? Why doesn't it follow a straight path?
Think about: Gravity pulls it down, but air pushes it sideways. The leaf's shape makes it catch air differently as it falls.
Observation 3: The Ball Thrown Up
Throw a ball straight up. Watch it rise, slow down, stop for an instant, and then fall back down.
🤔 Why does it slow down going up? Why does it speed up coming down?
Think about: Gravity is always pulling down. It works against the ball going up, but helps it coming down.
Made your observations? Now let's understand the science behind them.