click below
click below
Normal Size Small Size show me how
chapter 10
| Question | Answer |
|---|---|
| force | a push or pull exerted on a object |
| newton | the SI unit used for the magnitude, or strength, of a force |
| net force | the overall force on an object when all the individual forces acting on it are added together |
| unbalanced forces | forces that cause an object's velocity to change |
| balanced forces | equal forces acting on an object in opposite directions |
| friction | the force of two surfaces rubbing together |
| static friction | friction that acts on objects that aren't moving |
| sliding friction | when to solid surfaces slide over each other |
| rolling friction | an object that rolls across a surface |
| fluid friction | when a solid object passes through water |
| gravity | a force that pulls objects toward each other |
| mass | the amount of matter an object has |
| weight | the gravitational pull on a person or object |
| free fall | when the only acting on a object is gravity |
| air resistance | a type of fluid friction that acts on objects falling through the air |
| projectile | an object that is thrown |
| compression | an elastic force that pushes matter together |
| tension | the elastic force that pulls matter apart |
| momentum | the product of an object's mass and velocity |
| law of conservation of momentum | the rule that in the absence of outside forces the total momentum of objects that interact does not change |
| inertia | the tendency of an object to resist any motion |