Newton's Laws of Motion
Isaac Newton was a man born in the United Kingdom in 1643. In his time, he created the three laws of motion.
In Newton's first law of motion, also known as the law of inertia, he states that an object in motion tends to stay in motion unless acted upon by an unbalanced force. This meaning that when a ball is thrown in the air, if there was no unbalanced or outside force on the ball, the ball would keep going in that direction forever, in a straight line. But, since gravity, an unbalanced force, acts upon the ball, the ball will eventually come back down toward the center of the earth.
In Isaac's second law of motion, he states that force equals mass times acceleration. (Or F=ma.) This means that the amount of force acting upon an object is calculated by multiplying the objects mass, by the objects acceleration.
In Isaac Newton's third and final law of motion, he says that for every action, there is an equal, and opposite reaction. Meaning that if you throw a ball at the ground with 20 pounds of force, the earth is going to push back on that ball with the same amount of force applied. Thus if someone pushes horizontally against a wall with 100N of force, the wall will with 100N of force. #Kettner #NewtonsLawsofMotion