Section 1
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acceleration
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Last updated
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Date created
Mar 1, 2020
Cards (54)
Section 1
(50 cards)
acceleration
change in velocity/ time △v/△t
cosine
Trig function - adjacent/hypotenuse
linear equilibrium
sum of all linear forces acting on an object is 0: F net=0
Period
Time for one rotation or revolution
T = 1/f
Formula for the relationship between period and frequency
frequency
number of rotations/second
slope of position-versus-time graph
velocity
slope of velocity-versus-time graph
acceleration
universal gravitational constant (G)=
6.67E-11 N*kg^2/m^2
crest
the high point on a transverse wave
average speed formula
total distance/ time d/t
free-body diagram
A diagram that shows all the forces acting on an object
area between the graph and the t axis on a velocity-versus-time graph
object's displacement
average velocity
displacement / time △x/△t
velocity
speed with a direction
Watt
The unit of power; J/s
scalar
a quantity that does not involve a direction
45
angle for the best range for a projectile
uniform circular motion
-speed is constant - velocity is not constant because the direction of velocity is always changing -in order to produce acceleration there must be a force towards the center
centripetal force
Caused by something - friction, tension, gravity, normal force. Always points towards the center.
sine
Trig function - opposite/hypotenuse
vector
quantity that involves both magnitude and direction
90
angle for longest "hang time" for a projectile
friction force
the component of the contact force that's parallel to the surface
Newton's Universal Law of Gravitation; Gravitational Force
any two objects in the universe exert an attractive force on each other called the gravitational force
kinematics
mathematical tools for describing motion in terms of displacement, velocity, and acceleration
weight (of an object)
the gravitational force exerted on it by the Earth or whatever planet Fw or Fg= mg
normal force
component of force that's perpendicular to the surface
inertia
the property of objects to naturally resist changes in their states of motion
tension
Type of force in a cable or rope
static friction
occurs when there is no motion between two objects (friction that holds an object still)
longitudinal
the type of wave sound is
displacement
change in position
meter
Unit of distance or displacement.
tangent
Trig function - opposite/adjacent
Newton
kg*m/s^2 unit of force
Newton's third law
for every action there is an equal but opposite reaction (action/ reaction pair)
kinetic friction
occurs when there is relative motion (when there's sliding)
position
location in some point in space
second
Unit of time.
gravity (gravitational field)
9.8 m/s^2 downward 9.8 N/kg downward
inverse square relationship
Gravitational force and electrostatic force have what relationship for force and radius?
static equilibrium
an object is at rest
Hooke's Law
F = -kx
Newton's second law
acceleration = net force/mass
Joule
unit of energy; Nm
echo
Reflected sound is called a/an ...
potential energy
the energy an object or system has by virtue of its position Ug = gravitational potential energy △Ug= mg△y
kinetic energy
the energy of an object due to motion K= .5mv^2
Newton's first law
an object at rest will stay at rest and an object in motion will stay in constant velocity unless a net force acts on it (law of inertia)
Section 2
(4 cards)