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Physics
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Gravity
Terms in this set (41)
in the lab, should goggles be worn at all times
yes
in the lab, long hair should be
pulled back
the first step in the scientific method is
ask a question or state a problem
science deals with facts and questions that are
objective
the SI system is
a system of measurement used in most countries aka the metric system
in the metric system, the base unit for length is the
meter
a derived unit is made up of
two or more base units
is speed a scalar or vector
scalar
what two things make up a vector
magnitude and direction
what theorem can help you solve for displcement
Pythagorean theorem
is displacement a vector or scalar
vector
velocity must include a ____ and a ____
magnitude and a direction
projectiles accelerate because of what force
gravity
he measure of the force of gravity acting on a body is called what
weight
the amount of matter in an object
mass
define free fall
an object in free fall is moving only due to gravity
the horizontal component of a projectile motion has constant
velocity
when a projectile is moving up what about it is going down
speed
how are the vertical and horizontal movements of a projectile related
independent of each other
examples of projectiles
throwing a ball
examples of non projectiles
a moving car
can you purposefully make two projectiles hit each other
yes
what is the acceleration due to gravity on earth
9.8m/s^2
what is the SI unit for volume
m^3
define force
a push or pull
what is newtons 3rd law
for every action there is an equal and opposite reaction
what formula represents newtons 2nd law
f=ma
a sign is hanging from 2 chains. what forces are acting upon it
tension and gravity
list the units for Mass and weight
Mass: kg
Weight: N
define inertia
an objects resistance to change its motion
explain one example of newtons 3rd law
space shuttle being launched
suppose a cart is being moved by a certain net force. if the mass is doubled, how does the force change
force doubles
a kilometer is made of how many meters
1000
contact forces
frictional force
tension force
normal force
air resistance force
applied force
spring force
non contact forces
gravitational force
magnetic force
electrostatics
as a plant sits on a teachers desk is the plant experiencing balanced or unbalanced force
balanced
what is 7.5 x 10^3
7500
are the following vectors or scalars:
speed
velocity
distance
displacement
scalar
vector
scalar
vector
to find the net force on an object, it must be experiencing what type of forces
unbalanced forces
define gravity
an attractive force that exists between any 2 objects in the universe
when writing cornell notes, what are written in the box on the left
recall cues
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