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Chpt. 5 Motion
Chapter 5 motion science
| Question | Answer |
|---|---|
| Change in position over time relative to a reference point | Motion |
| Common Reference Point | Earth's Surface |
| Distance/Time | Speed |
| Speed doesn't change | Constant Speed |
| Total Distance/Total Time | Average Speed |
| Object that travels at a normal speed | Average Speed |
| Speed in a given direction | Velocity |
| Combine Velocities by adding or subtracting | Resultant Velocities |
| Combine Velocities in the same direction | Adding |
| Combine Velocities in opposite directions | Subtracting |
| Rate of change in Velocity | Acceleration |
| Increase in Acceleration | Positive Acceleration |
| Decrease in Acceleration | Negative Acceleration or Deceleration |
| Push or Pull and Expressed in Newtons | Force |
| Combination of all of the forces acting on an object | Net Force |
| Force applied in same direction | Balanced Force |
| Net Force is... | Zero Newtons |
| Object at...will stay at... | Rest, Rest |
| Combined Net Force Doesn't equal | Zero |
| A Force that opposes Motion between two surfaces that come in contact with each other | Friction |
| 2 types of Friction | Kinetic and Static Friction |
| Friction between two moving objects | Kinetic Friction |
| Friction between two NOT moving objects | Static Friction |
| Use Lubricants or Smoother Surfaces | Reduce Friction |
| Make surfaces rougher | Increase Friction |
| Force of Attraction between objects due to their masses | Gravity |
| Stated that gravity is a invisible force which can cause objects to move | Sir Issac Newton |
| Gravitational Force... as mass increases | Increases |
| Gravitational Force... as distance increases | Decreases |
| Weight Depends on the Force of | Matter |
| A measure of the force of gravity and measured in Newtons | Weight |
| ...is Amount | Mass |