Here's why:
* Gravity is a force of attraction: Every object with mass exerts a gravitational pull on every other object with mass.
* Unbalanced forces cause acceleration: When a net force (meaning the forces are not balanced) acts on an object, it causes the object to accelerate. This means the object will change its speed or direction.
* Gravity's pull: The Earth has a large mass, so it exerts a strong gravitational pull on objects near its surface. This pull causes objects to fall towards the ground.
Example: If you drop a ball, gravity pulls on it, causing it to accelerate downwards. The ball will continue to accelerate until it hits the ground or something stops it.
