Newtons Laws of Motion
An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
This law is often called"the law of inertia".
The object staying at the same speed forever unless it is stopped by another force. If the object is not in motion it will stay motionless.
The wind mills are in motion and according to Newton's law it will stay in motion unless another object stops it.
A ball spinning according to Newton's law the ball will stay in motion unless another object stops it.
Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object.)
Two objects with the same mass will have the same acceleration. Two objects with different masses will move at a different acceleration.
The biker flew through the air because the was the smaller mass.
A bat hitting a ball the ball has a lesser mass and will more with more acceleration.
For every action there is an equal and opposite re-action.
This law means when something colides there will be and equal or opposite reaction so when two things hit they will bounce back at equal or different speeds.
The ball hit the end of the other four balls and sent the ball on the other end off and it will will come back and complete the process.
My hand hitting a balloon and making the balloon fly across the room.