Newton's 3 Laws Of Motion
Newton's First law of Motion- Inertia:
A body remains at rest or in motion with a constant speed unless it comes in contact with another force. In Skiing, when the skier tilts to the left and pushes down into the snow to stop, that is an example of Newton's 1st law.The skier will keep going until they come in contact with an outside force.
Newton's Second law of Motion - f= m x a:
The rate of change of momentum is proportional to the imposed force and goes in the direction of the force. Newton's second law predicts the behavior of objects for which all existing forces are balanced. An example would be pushing a shopping cart in the grocery store. The force of you pushing causes the cart to accelerate forwards.
Newton's Third law of Motion - action / reaction
When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction to that of the first body. For every action, there is a reaction. When you jump, the action would be your feet pushing down on the ground and the reaction would be your body accelerating upward.