15. How can you tell if an object is in motion?
A. There is motion when an object changes its position from one place to another.
B. There is no motion when an object changes its position from one place to another.
C. There is absence of motion when an object changes its position from one place to
another.
D. None of the above
To inami 530
16. What causes motion?
A. Motion is caused by gravity.
B. Motion is caused by a movement around.
C. Motion is caused by a force or set of forces.
D. Motion is caused by magnet on the opposite direction.​