High School Regular Physics Acceleration Notes

acceleration(a) the rate of
change in velocity
·
-




-vector has direction -




-
SI units : m/s2

=
zatf-viVf Vi at
-ta V. - +



+ Vi + Vi

·
M/g2

A
- a =
=
S S .

so

average velocity
·




When a = 0
Vaug
-




When to
Vaugf
-
a


2
-




motion
if we combine these
equations .. -x =
Yali
maps
·




-

ex1 : Vi = 3m/ss - - ·>

t 0s
a= 2 m/gh = t = 1s t =2 t = 35
vi 3 m/s
= v =
Smls V= Tm/s V= 9m/s

V to the
+
speeds up moving right
at

ex 2 : Vi - 4m/s - 1--




is
-
= 1 --


a = - 2m/s2 + = 35t = 25 tos
V = tom/s V= -8m/s V = 6m/s Vi = 4m/s

v-
speeds up moving left
as

-
ex3 : Vi 20 m/s =
- - -

a = -
4misat = Os t= 15 t = 25 t = 35

Vi = 20m/s v = 16m/s V= 12m/s V= Sm/s

v slows down
moving right
+


a

-
ex4 : Vi = 30m/s 1
Ses
-
D o -a
e
-



a= 10m/s2 t = 35 t =S t = 15

V= OMIS v =- 1Dm/s v= -
20m/s Vi = -
30 m/s
v slows down left
moving --
a t
t = 45
-
t = 55 b
V = lomis V= Gomls V= 30m/s