Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
73 Cards in this Set
- Front
- Back
|
main systems of units
|
metric system and british system
|
|
|
fundamental physical properties
|
length mass tim and force
|
|
|
in the MKS what is the unit for length
|
meter
|
|
|
in the MKS what is the unit for mass
|
kg
|
|
|
in the MKS what is the unit for time
|
seconds
|
|
|
in the MKS what is the unit for force
|
newton
|
|
|
in the CGS what is the unit for length
|
cm
|
|
|
in the CGS what is the unit for mass
|
gram
|
|
|
in the CGS what is the unit for time
|
second
|
|
|
in the CGS what is the unit for force
|
dyme
|
|
|
in the British system what is the unit for length
|
feet
|
|
|
in the British system what is the unit for mass
|
slug
|
|
|
in the British system what is the unit for time
|
second
|
|
|
in the British system what is the unit for force
|
pound
|
|
|
out of all the fundamental properties which is not really consider a fundamental property
|
force
|
|
|
the body of knowledge that describes the order within nature and causes of the order
|
science
|
|
|
in 235 BC measured that shadows of pillars similar in size during the summer solstice to determine the size of the earth
|
Eratosthenes
|
|
|
amount of matter an object is composed of
|
mass
|
|
|
force of gravity on an object
|
weight
|
|
|
two things you need for a physical property
|
amount and type
|
|
|
scientific notation for centi
|
1x10^-2
|
|
|
scientific notation for milli
|
1x10^-3
|
|
|
scientific notation for kilo
|
1x10^3
|
|
|
scientific notation for micro
|
1x10^-6
|
|
|
scientific notation for nano
|
1x10^-7
|
|
|
standard units need to fit within
|
mks and cgs
|
|
|
it can't survive the scientific method because it can't be proven like the hunt for bigfoot
|
pseudoscience
|
|
|
steps to the scientific method
|
1. making detailed observation 2 and 3. develop a hypothesis 4. develop experiments to test hypothesis 5. summary of findings
|
|
|
what stage in the scientific method should you fail alot at
|
step 4
|
|
|
came up with idea of nonviolent and violent motion
|
Aristotle
|
|
|
believed the Earth was at the center of the universe
|
Aristotle
|
|
|
in 1500 introduced the idea that the motion of the planets, included a stationary sun at center and the planets are beyond it
|
Copernicus
|
|
|
the belief that the sun at center of solar system
|
heliocentric
|
|
|
the belief that the earth is at the center of the solar system
|
geocentric
|
|
|
the first experimental physicist
|
Galileo
|
|
|
believed that objects "mass" was related to how fast it would fall
|
Artistotle
|
|
|
figured out that despite the size all objects fall in the same way
|
Galileo
|
|
|
the resistance of a body to change its motion
|
inertia
|
|
|
born the same year Galileo died
|
Issacc Newton
|
|
|
an object will remain at rest or in motion in a straight line at a constant speed unless acted upon by a nonzero NET force
|
Newton's first law of Motion
|
|
|
formed when hypothesis are tested over and over again and hold up
|
law
|
|
|
synthesis of large body of information that encompasses well-test and verification
|
theory
|
|
|
the sum of all forces acting on an object taking into account direction
|
net force
|
|
|
total net force is equal to zero
|
equilibrium
|
|
|
force acting on an object from the surface its on
|
support force/normal force
|
|
|
speed at fixed time
|
instantaneous speed
|
|
|
total distance divided by time
|
average speed
|
|
|
includes speed and direction
|
velocity
|
|
|
physical property that includes direction and magnitude
|
vector
|
|
|
mass divided by volume
|
density
|
|
|
a push or pull, and consider a vector
|
force
|
|
|
includes magnitude and direction
|
vector
|
|
|
representation of all forces acting on a mass, anything that touches mass must be represented by a force and weight
|
free body diagram
|
|
|
force in a rope or wire
|
tension
|
|
|
what is the difference between speed and velocity
|
speed includes only magnitude while velocity includes speed and direction
|
|
|
velocity at a specific time
|
instantaneous velocity
|
|
|
rate at which your rate (speed/velocity) increases
|
acceleration
|
|
|
average and instantaneous are the same because acceleration is constant
|
uniform motion
|
|
|
standard MKS unit for acceleration
|
meters per second squared
|
|
|
standard MKS unit for velocity
|
meters per second
|
|
|
the part of mechanics that deals with description of motion
|
kinematics
|
|
|
objects initial speed is zero m/s in the y-direction
|
free fall
|
|
|
acceleration due to gravity measurement
|
g= 10 m/s^2
|
|
|
objects fall at a certain acceleration due to what acting on them
|
force of gravity
|
|
|
a division of mechanics that explains why things move as they do
|
dynamics
|
|
|
the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of an object
|
newton's second law of motion
|
|
|
what is necessary in order for an object to accelerate
|
a force that doesn't equal zero
|
|
|
its about the nature of basic things such as motion, forces, energy, matter, heat, sound, light, and structure of atoms
|
physics
|
|
|
what did aristotle believe about motion
|
came up with non violent motion which proceeds from nature of an object and violent motion cause from push or pulling forces
|
|
|
what ways did galileo prove aristotle's theory were wrong
|
drop two objects with different masses off the leaning tower of pisa to prove that mass has nothing to do with how fast an object falls and used inclined planes to prove that an object doesnt need push or pull to keep object moving
|
|
|
for every action there is an opposite and equal reaction
|
newton's third law of motion
|
|
|
what do you need to know about the force of gravity in relation to the radius of the earth
|
inversely proportional; if radius increases then force of gravity decreases and if radius decreases then force of gravity increases
|
|
|
what do you need to know about the force of gravity in relation to the mass of earth and the object
|
directly proportional; if the mass of earth increases then the force of gravity increases and if the mass of earth decreases then the force of gravity decreases
|
