equation_sheet_2 - Equation Sheet Exam 2 VECTORS Ax = Acos...

Equation Sheet, Exam 2
VECTORS:
A
x
= Acos ( θ ), A
y
= Asin ( θ ), and
A = ( A 2
x
+ A 2
y
) 1 / 2 , and tan ( θ ) =
A
y
A
x
.
KINEMATICS:
x
f
= x
i
+ v
xi
t + 1
2
a
x
t 2 ,
v
xf
= v
xi
+ a
x
t ,
v
2
xf
= v
2
xi
+ 2 a
x
( x
f
- x
i
),
x
f
= x
i
+
1
2
( v
xi
+ v
xf
) t ,
NEWTON’S LAWS:
∑
F = m a , F
12
= - F
21
,
FRICTION:
f
k
= μ
k
F
N
f
s
≤ μ
s
F
N
WORK:
W = F · d = Fdcos ( θ ) =
R
F · d l
ENERGY:
W
s
= U
s
= 1
2
kx 2
s
K = 1
2
mv 2
GRAVITATION: