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3 law gravity
gravity
| Question | Answer |
|---|---|
| gravity | a force of attraction pulling on a object |
| gravitational force | increases as mass increases |
| universal gravitation | objects attract each other through gravitational forces |
| gravitational forces | decreases as distances increases |
| all objects large and small | exert a gravitational force |
| blood pressure | affected by gravity(greater in lower parts of the body than the upper part) |
| free fall | motion of the body only when the force of gravity is acting upon it. occurs when there is no air resistance like in space |
| in the absences of air resistances | all objects will hit the ground at the same moment no matter the size/mass |
| weight | force on an object due to gravity |
| weight influences | shape(elephants and hippos have strong skeletons |
| momentum | the ability to stay in motionn |
| conversation of momentum | can not be created or destroyed |