# Save the Egg Lab

### Newton's Laws & Momentum

## Terms & Definitions

- force- a push or pull that acts on an object
- net force- the overall force acting on an object after all forces are combined
- friction- a force that opposes the motion of the objects that touch as they move past each other
- static friction- the friction force that acts on objects that are not moving
- sliding friction- a force that opposes the direction of motion of an object as it slides over a surface
- rolling friction- the friction force that acts on rolling objects
- fluid friction- opposes the motion of an object through a fluid
- air resistance- fluid friction acting on an object moving through the air
- gravity- a force that acts between any two masses
- projectile motion- the motion of a falling object after it is given an initial forward velocity
- inertia- the tendency of an object to resist a change in its motion
- mass- a measure of the inertia of an object
- weight- a measure of the force of gravity acting on an object
- momentum- the product of an object's mass and it's velocity
- law of conservation of momentum- if no net force acts on a system, then the total momentum of the system does not change
- Newton's First Law of Motion- the state of motion of an object does not change as long as the net force acting on the object is zero
- Newton's Second Law of Motion- the acceleration of an object is equal to the net force acting on it divided by the object's mass
- Newton's Third Law of Motion- whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object.