Question

No force is necessary to
1. keep an object moving the way it is al-
ready moving.
2. cause a change in the motion of an ob-
ject.
3. stop an object from moving.
4. start an object moving.

Answer 1

1.

Answer 2

1. keep an object moving the way it is al-
ready moving.

Answer 3

Newton's first law: The velocity of a body remains constant unless the body is acted upon by an external force.

Answer 4

so its # 1

Answer 5

1