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momentum
mass*velocity
standard unit of momentum
kg*m/s
SI unit for velocity
m/s
definition of impulse
change in momentum
impulse
F*t(force*time), m*deltav (mass* change in velocity)
law of conservation of momentum
the total momentum of two objects will remain the same before and after a collision
momentum must have
a direction!
intertia is…
basically mass
units of impulse
N*s
momentum of a system is only conserved when…
there is no net external force acting on a system
work is…
the transfer of energy
energy is…
the ability to do work
SI unit of energy
Joules
SI unit of work
Joules
energy is only visible when…
work is done
potential energy (PE) is…
stored energy
GPE depends on…
mass + height
weight is…
mass*gravity
meight is measured in…
newtons
kinetic energy (KE) depends on…
mass + velocity, but velocity has a greater effect
W
work
w
weight
law of conservation of energy
energy cannot be created or destroyed, only converted
work
force*distance
power
work/time
power is measured in…
watts
watt is…
Joule/second, or kg*m²*s-³
Hooke’s Law
F=k*deltax
SI unit for spring constant
newtons/meter
spring constant is…
how stiff or stretchy the spring is
force exerted by a spring is called a….
restoring force
Note 
Flashcard (201)