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Physics Test - January 14, 2016

rename
vepikuno's version from 2016-01-21 01:52

Section

Question Answer
momentum unitm/s
area underneath graphapplied force
p = mvone object
p before = p aftertwo objects
p before = p afterexplosions
p before = p aftercollisions
J = F net t = delta p = m delta vsomething changes about the object
J = F net t = delta p = m delta vimpulse
work unitjoules
power unitwatts
pulling a box or sledcos theta
work can bepotential or kinetic
PEgg = 9.81
PEgvertical
PEggravitational potential energy
PEgheight
PEglifting
PEsspring
PEg unitjoules
two objects in kinetic energyadd the masses
KE graph is acurve
what is x in PEs=1/2kxelongation
what is x in PEs=1/2kxchange in length from equilibrium
what is x in PEs=1/2kxcompression
ballchange in velocity
kguse 9.81
final and initialfinal-inital
friction problemssteals, subtract the difference
total mechanical energyremains the same
velocitykinetic energy
falls freelyuse 9.81
Newtonsthe force
memorize
impulse unit: n/s