Which is a more accurate statement that forces cause motion or that forces cause changes in motion?

Answer 1

This question is very unclear. Under the right circumstances any force will cause a change in motion. Whenever the net force, in a given direction, on a body is greater than zero, that body will move.

Answer 2

It may be more accurate to say that forces cause changes in motion. If an object is at rest and is moved by a force, its motion was changed when it was moved by that force. If an argument is presented that a force causes motion, it can be counter-argued that a force caused the object to change its motion from none (stationary) to something else. Let's consider one more thing. Force (F) equals mass (m) times acceleration (a). (F = ma) Acceleration is a change in motion. Can it be said any more clearly? Wikipedia has more information in their article on force, and a link is provided below. Why not surf on over and skim it? After all, that the way the world works.

Answer 3

Force causes acceleration. Acceleration is a change of speed or direction of motion.

No force is necessary to maintain constant speed in a straight line. So you'd have

to say that force causes changes in motion.

Answer 4

Any force that isn't canceled by an equal opposite force causes a change in

the speed or direction of motion, or both. The change is called 'acceleration'.

Note: "Unbalanced" is not a "type of force".

Answer 5

True. Refer to Newton's First Law of Motion or the Law of Inertia.