click below
click below
Normal Size Small Size show me how
5-4 & 6-1
science
| Question | Answer |
|---|---|
| What is a force that of attraction btw objects that is due to their masses? | gravity |
| Gravity can change the motion of an object by changing... | speed or direction or both |
| does all matter have mass | yes |
| what pulls everything towards the center of the earth | earth's gravitational force |
| can balanced forces result in a change in position | no |
| what does the law of conservation state | gravitational force increases when mass increases |
| is gravitational force the same everywhere you go | No |
| what is a measure of the gravitational force on an object | weight |
| what is the amount of matter in an object | Mass |
| does an objects mass ever change | no |
| What is the SI unit for weight | newtons |
| What is the SI unit for mass | grams |
| why do objects fall to the ground at the same rate | Bc of the acceleration due to gravity is the same for all objects |
| What kind of objects experience a greater gravitational force | heavier ones |
| is a lighter object easier to accelerate than a heavy one | yes |
| What is the rate at which velocity changes | acceleration |
| what is the acceleration formula | v/t=a |
| When the speed of a falling object increases what also increases | air resistance |
| What is it called when an object falls at at a constant velocity | terminal velocity |
| what is it called when gravity is pulling an object down and no other forces are acting on the object | free fall |
| what's an example of free fall | floating in outer space |
| when an object is in free fall does the object have weight | no |
| can an object be in free fall if it's in air | no |
| What is a unbalanced force that causes objects to move in a circular path | centripetal force |
| what force keeps objects in centripetal force in motion | gravity |
| what does centripetal mean | towards the center |
| what is the curved path an object follows when it is than thrown or propelled near earth's surface | Projectile motion |
| What are the two types of projectile motion | Horizontal and vertical |