Newton's Three Laws Of Motion

Newton's Three Laws Of Motion:


1. An object in motion will stay in motion unless a force is acted on it.

e.g. If a spaceship was in motion in space, and since there is no gravity there is nothing to stop it unless another force is acted on it.



2. Acceleration is produced when a force acts on a mass. The greater the mass, the greater amount of force is needed.

e.g. if a car that weighs 1,000 kg is out of gas and it is pushed 0.05 m/s/s then the amount of force that is needed is = 1000 x 0.05 which equals 50 newtons.



3. whenever an object pushes another object it gets pushed back in the opposite direction equally hard.

e.g. If a rocket's action is to push down on the ground with the force of its powerful engines and the reaction is that the ground pushes the rocket upwards with an equal force.