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Force: A force is a push or a pull. Forces are measured in Newtons. Did you know that forces only exist when objects interact? It is true.
A force can change the energy of an object. Whenever two objects touch, forces are involved.
In fact according to Newton’s Third Law, the bat and the ball will push against each other with equal forces.
A force can cause acceleration. Acceleration can mean speeding up, slowing down or changing direction. A force is NOT required to keep an object in motion. See inertia. Inertia is NOT a force.
Friction: When one mass rubs against another, friction results. Friction is the force that acts against motion. Friction slows moving objects. There are many types of friction. Check out Stickman physics.
NOT Forces
NOT Forces
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