Here's why:
* Inertia is directly proportional to mass. A bowling ball has significantly more mass than a golf ball.
* The more massive an object, the harder it is to change its motion (start it moving, stop it, or change its direction).
Therefore, a bowling ball has much greater inertia than a golf ball. This means it takes much more force to:
* Get a bowling ball moving from rest.
* Stop a bowling ball that's already moving.
* Change the direction of a moving bowling ball.
You can experience this difference in inertia yourself. Try throwing a bowling ball and a golf ball with the same amount of force. You'll find that the golf ball will go much further and change direction more easily than the bowling ball.
