Life is full of forces. The force of gravity, the force of momentum, the force of friction. But one thing is very simple. For every action there is an equal and opposite reaction. This is one of Issac Newtons three laws, and the reason your car slowly comes to a stop while you don't press on the gas or break. Because when no extra forces are acting, the car will become a balanced force. This means that it isn't doing anything, because the force it is putting out is equal to the force being put on it.
Try this. Put you hand on a countertop. Does it move? Probably not, right? That is because the force being put on the countertop is being equaled by other means, in this case probably supports underneath it. So the force you are putting on it is being balanced. Balanced forces.
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