Newton and his 3rd Law

A quick comment about this law – arguably the most complex of the three laws. My experience is that teachers often present Newton’s Laws in the way the books normally state them. This is something along the lines of … Newton’s 1: An object will move in a straight line at constant speed unless acted on by an external force. Newton’s 2: If an external unbalanced force acts upon an object, the unbalanced force will produce a rate of change of momentum and ...