1D, 2D KINEMATICS

given things in projectile motion

ay = -9.8 m/s²

ax = 0 m/s²

v0y = 0 m/s

actually it depends on the question lol but this is for projectile motion

which equation finds time in projectile motion?

eq 1

v = u + at

2t for end time

which equation finds displacement (y) in projecitle motion?

this helps find maximum height

eq 4

v² = u² + 2ax

note: for maximum height, use values pertaining to y

formula for range (R)

Vox * T

initial velocity in x direction

Vox and Voy formula

Voy = Vo sinθ

Vox = Vo cosθ

kinematic formulas

x | v = u + at

a | x = 1/2 (u + v) t

v | x = ut + ½ at ²

t | v² = u² + 2ax

kinematics definition

concepts that describe motion without considering causes of it (forces)

dynamics definition

causes of motion/effect of forces have on motion

kinematics + dynamics

mechanics

vector definition

considers magnitude and direction

avg speed definition

distance/time to cover distance (m/s)

acceleration definition

change in velocity + time when change occurs

what if velocity is the same direction as acceleration vector

speeding up

what if velocity is the opposite direction as acceleration vector

slowing down

value of acceleration in feet

32.2ft/s^2

what does horizontal line represent in position/time graph

speed is 0

what does positive slope represent in position/time graph

speed is constant

what does horizontal line represent in velocity/time graph

acceleration is 0

what does positive slope represent in velocity/time graph

acceleration is constant

displacement definition

1. vector

2. shortest distance from initial to final position

scalar quantities

mass, time, speed

speed vs. velocity

velocity considers magnitude and direction

speed is only magnitude

displacement formulas

1. x - x0

2. st 

avg acceleration formula

change in velocity/change in time

v-v0/t-t0 

DST triangle

only for when acceleration is 0/constant velocity

avg velocity formula

x-x0/t-t0

(ROC displacement)

what is the slope in a position vs. time graph

avg velocity (hence formula x-x0/t-t0)

slope formula

y2-y1/x2-x1

types of graphs

1. position/time

2. velocity/time

what is the slope in a velocity/time graph

avg acceleration (hence formula v-v0/t-t0)