It may seem to us today to be only a small step from Galileo's observations to Newton's laws of motion. But it has to be observed that the two propositions above, in the form in which they are ...

You now know that force isn't the cause of constant motion. Constant motion ... like the gain in velocity each second is about twice that when pulled by one spring. These two trials are not really ...

Newton's laws of motion are the rock upon which classical physics have been built, but we may have been misinterpreting it for centuries.

According to Newton's third law of motion, whenever two objects interact, they exert equal and opposite forces on each other. This is often worded as 'every action has an equal and opposite reaction'.