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Science chpt 12
Newton's Laws
| Term | Definition |
|---|---|
| How fast the position of an object changes is its | speed |
| An object's speed in a certain direction if its | velocity |
| A change in a velocity in a certain amount of time is called | acceleration |
| How much an object weighs depends on its mass and the force of | gravity |
| An object's tendency to resist a change in motion is its | inertia |
| An astronaut on the moon has the same mass as she did on Earth, but has less | weight |
| For every action, there is an equal but opposite | reaction |
| Pushes or pulls which completely cancel one another out are called | balanced forces |
| A push or pull that acts on an object is called a(an) | force |
| Pushes or pulls which are not cancelled by other pushes or pulls are called | unbalanced forces |
| Gravity is a | force |
| When object A exerts a force on object B, object B | exerts a reaction force on object A |
| A mass accelerates because | a force is acting on it |
| A baseball and a sheet of paper are dropped at the same time from the same height. If there is no air rresistance | the baseball and the paper will land at the same time |
Created by:
slohrenz
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