Newton's Third Law of motion and momentum Subtitle

Newtons Third law Whenever and object exerts a force on a second object, the second object exerts an equal and opposite force on the first object. Referred to action and reaction forces

Action and reaction forces Equal in size and opposite directions Example: When you press your hand against a wall your hand exerts a force on the wall, known as the action force. The reaction force is caused when the wall gives back an equal and opposite force against you hand.

Action-reaction forces do not cancel Do not act on the same object When a equal and opposite force act on the same object do they result in a net force of zero. Net force- Overall force acting on an object.

Momentum The product of any objects mass and its velocity. An object has a large momentum if the products mass and velocity is large. An object with large momentum is hard to stop Momentum formula: Momentum = Mass x Velocity

Conservation of momentum Conservation- When something has a constant value Law of conservation of momentum- if no net force acts on a system, then the momentum in the system does not change

Summary video-

Quiz:

What did Newton's third law refer to? Time and reaction forces Action and reaction forces Distance and reaction forces None of the above

Action and reaction forces Equal in direction opposite in size Equal in size opposite in direction None of the above

Action and reaction forces A) Do not act on the same object B)Do not cancel C) All of the above

Momentum The product of any objects mass is acceleration The product of any mass is velocity A product with a small momentum is easy to stop None of the above

Conservation of Momentum When something does not have a constant value If no net force acts on a system then the momentum in the system will change if no net force acts on a system, then the momentum in the system does not change