Semester 1 Final Flashcards
speed
how fast the object is moving
velocity
speed in a given direction
position = _______________
(velocity)(time) + starting position
equation to find velocity
change in position over change in time
motion maps
represents position, velocity, acceleration, of an object at various clock readings
what do the dots represent on a motion map
the objects position each second and velocity is represented the arrow
acceleration
a change in velocity in a given amount of time
equation to find velocity
acceleration = velocity final - velocity initial over time
acceleration is a ______
vector that can be positive or negative
slope of a velocity time graph
acceleration
position time squared graph =
1/2 acceleration
velocity position graph =
2(acceleration)
acceleration due to gravity
9.8m/s2
free fall equations
Vf= gt
delta xy = 1/2gt2
Vf2= 2adeltax
vector
- arrow that show magnitude and direction
- length of arrow = magnitude
- point shows direction
how do you add vectors together
tip to tail method
what are scalars
magnitude only (ex. speed)
vectors have both
magnitude and direction
velocity is a ______
vector
inertia
- object’s resistance to a change in motion
- directly related to mass
coefficient of friction
value that indicates how much frictional force there is between two surfaces
static friction
force that opposes the start of any motion
kinetic friction
force that opposes motion once the object is moving
static friction is always ________ than kinetic friction
bigger
depends on gravitational force and can change from location to location
weight
what something is made up of
mass
newtons law of universal gravitation
any two objects attract each other with a gravitational force, proprtional to the product of their masses and inversely proportional to the sqaure of the distance between them
what is the gravitational constant
G= 6.67 x 10^-11
law of universal gravitation aka
inverse square law
newton’s third law
- for every action, there is an equal and opposite reaction
- forces occur in equal and opposite pairs
newton’s second law
the acceleration of an object is directly proportional to the net force and inversely proportional to the mass of the object
Fnet = ___x_____
mass x acceleration
