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11 terms

Integrated Science Chapters 4 and 5

to study for test. Teacher: Mr. O'reilly 2011/2012 school year
STUDY
PLAY
interaction
Mutual action between objects where each object exerts an equal and opposite force on the other.
force pair
The action-reaction pair of forces that occur in an interaction
Newton's third law
Whenever one object exerts a force on another, the second object exerts an equal and opposite force on the first. Or put another way, "To every action there is always an opposed equal reaction."
momentum
inertia in motion
momentum=
mass * velocity
impulse
the quantity of force * time interval
impulse=
change in momentum
conserved
a physical quantity that remains unghanged during a process
law of conservation of momentum
in the absence of an external force, the momentum of a system remains unchanged. (Net momentum before a collision = net momentum after a collision.)
elastic collision
a collision in which colliding objects rebound without lasting damage or the release of heat
inelastic collision
a collision in which colliding objects become tangled together and generate heat