Answer:
Nothing moves until a force acts upon it. If something is moving, it will carry on moving at the same speed and in the same direction until a force happens to change it. ... The bigger the force, and the lighter theobject, the greater the acceleration. It can also make something slow down, speed up or change direction.
An object is in motion if its distance relative to another object is changing. To tell if an object is moving, you use a reference point. If an object's distance from another object[reference point] is changing. A place or objectused for comparison to determine if somethingis in motion.
hope it help:)
