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