Here's how:

* Newton's Laws of Motion explain this:

* First Law (Inertia): An object at rest stays at rest, and an object in motion stays in motion at a constant speed and direction *unless acted upon by a force*.

* Second Law: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. This means a force can cause an object to speed up, slow down, or change direction.

* Third Law: For every action, there is an equal and opposite reaction. When you push on something, it pushes back on you with an equal force.

Examples of forces that can change motion:

* Gravity: pulls objects towards the center of the Earth.

* Friction: a force that opposes motion between two surfaces in contact.

* Normal force: the force exerted by a surface on an object in contact with it.

* Applied force: a force applied to an object by another object.

* Tension: a force transmitted through a string, rope, or cable.

* Air resistance: a force that opposes the motion of an object through the air.

Let me know if you want to explore any of these forces in more detail!