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momentum and impulse
quiz 11/18/16
| Question | Answer |
|---|---|
| conservation of momentum | the total momentum remains constant unless a net external force acts on a system |
| momentum | product of the measure and velocity of an object |
| what is momentum measured in? | expressed in "newton seconds" (Ns) |
| impulse | the quantity of force and time applied in a situation |
| spring | compressible, helical structure that returns to its uncompressed state upon release |
| momentum is also a measure of what? | an object's resistence to outside forces |
| forces move- | or else they wouldn't be forces |
| for KE= .5mv^2, doubling the velocity will | have the same impact as quadrupling the mass |
| mass and velocity in KE=.5mv^2 are | inversely proportional |
| for any 2 objects colliding, the net kinetic energy before... | will equal the net KE after impact |
| momentum increases... | when either mass or velocity increases |
| force is... | expressed in newtons N=kg(m)/s^2 |
| momentum formula | p=mv |