click below
click below
Normal Size Small Size show me how
Newton law of motion
IPC 2-6 voab
| Term | Definition |
|---|---|
| Motion | A Movement |
| Force | A push or pull that acts on an object; Measured in Newtons (N) |
| Weight | The force of gravity acting on an Object |
| Net Force | The overall force acting on an object after all the forces are combined |
| a) balanced force | Net force at zero , no change in objects accelerates |
| b)unbalanced force | Net force not equal to zero,object accelerates |
| Mass | The amount of matter in an object |
| Intertia | the tendency of an object to resist a change in its motion |
| Accerleration | the rate at which velocity changes results from change in speed and or direction |
| Velocity | The speed and direction an object is moving measured relative to a reference |
| Newton's first law | 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 | -the acceleration of an object is equal to the net force acting on it divided by the object's mass |
| Acceleration | (a) = Net force (F) / Mass (m) |
| Newton's third law | -whenever one object exerts a force on a second object (action force), the second object exerts an equal and opposite force (reaction force) on the first object |
| Friction | a force that opposes the motion of objects that touch as they move past each other |
| Static friction | acts on objects that are not moving (example: keeps shoe from sliding when you take a step) |
| Sliding friction | opposes the direction of motion of an object as it slides over a surface |
| Rolling friction | Acts on rolling objects and is significantly lower than other types of friction |
| Gravity | an attracting force that acts between any two masses |
| Air resistance | —fluid friction acting on an object moving through the air; increases with speed; increases if surface area of moving object increases |
| Terminal Velocity | —the constant velocity of a falling object when the force of air resistance equals the force of gravity |
| Momentum | the product of an object’s mass and its velocity (Momemtum = Mass x Velocity); an object with a large momentum is difficult to stop |