EXTRA easy
what is a measure of inertia?
an objects mass
which of newtons laws states that for every action there is anqual and opposite reaction
newtons 3rd law
if both a goth ball anda bowling ball are moving at all the same veloctiy, which ball has more momentum and why?
greater mass
what is sublimation
vaporization
the freezing point tempature is the same temp as which other point during the phae change?
melting point
which laws explain inertia?
first law
what factor must change when a machine changes the size of a force?
a force
define a homogenous mixture
a mixture where the components are evenly distributed
describe the diffrence between gas and plasma
A gas consists of neutral atoms or molecules, while a plasma is a partially
what type of friction occurs when brakes are applied on a car or a biyclycle
kenetic friction
what do balance forces equal?
equal in magnitude
what does a single fixed pulley change on a object
changes direction
a mixture where the composition is not uniform
what is the universal solvent
water
what is the force that oposes motion bewteen two surfaces that are touching
friction
what mut happen for work to be done?
force must be applied
which of newtonslaw explains inertia
first law
list the 4 types of friction in order of leat to greatest strentgh
rolling, fluid, sliding and static
what are the four most familar states of matter
solid, liquid, gas, and plasma
what is the si unit for speed
meters per second
the amount of work an object/person does per second is
power
what friction is acting on an object as it falls through the sky
air resitance
what term is change fromliquid to gas
evaporation or vaporization
what type of frictionis air resistance known as
fluid friction or drag
if a person runs 100 min 12s, what is his/her speed
30km