FIRST LAW OF MOTION
All things will either stay still or move with a steady speed unless a force acts on them. This idea is called "inertia" . The more mass something has, the more inertia it has too -so it will be more likely to stay still or resist changes to its motion.
AT REST-
A ball rests on the ground because there is no overall force acting on it. Its weight is perfectly balanced by the ground and there is no sideways force.
FORCE APPLIED-
MOTION STOPPED
All things will either stay still or move with a steady speed unless a force acts on them. This idea is called "inertia" . The more mass something has, the more inertia it has too -so it will be more likely to stay still or resist changes to its motion.
AT REST-
A ball rests on the ground because there is no overall force acting on it. Its weight is perfectly balanced by the ground and there is no sideways force.
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| BALL IS MOTIONLESS |
when you kick the football, you apply a force to one side .
There's nothing to counteract or balance this force so it makes the ball moves.
| FOOT APPLIES FORCE TO BALL |
The ball shoots through the air or rolls across the ground with a fairly steady speed until it hits something , such as your foot.
when your foot supplies a force, the ball stop moving
 |
| FOOT BRINGS BALL TO A STOP |
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