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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 |