Motion |
Relate position, velocity, acceleration and time for objects traveling in 1 or 2 dimensions. |  |
x=x0+v0*t+½a*t2
v=v0+a*t |
v2=v02+2a(x-x0) |
Force |
Relate acceleration and force, find tension and normal forces, relate friction to normal force. |  |
SF =
ma
Add by components as needed F12 = - F21 |
F(G)=mg
F(frk)=mkF(N) F(frs)<=msF(N) |
Circular Motion |
Relate acceleration, speed and radius for an object traveling in a circle. |  |
aR = v2/R | FR = mv2/R |
Energy |
Relate total energy (potential, kinetic, other) at two points in time. Relate work (energy) to distance and force. |
 |
W = Fd·cos(q)
KE0+PE0+...=KEf+PEf+... |
KE = ½mv2
PEg = mgy PEs = ½kx2 |
Momentum |
Relate momentum (mass and velocity) of several objects before and after interaction (esp. collision.) |
 |
Spbefore
= Spafter
Add by components as needed I = Dp = Faverage*Dt |
|
Rotation |
Relate angular position, angular velocity, angular acceleration and time with each other and with linear equivalents. |  |
q = q
+ w0t
+ 0.5at2
w = w0 + at |
w2= w02+2a(Dq) |
Torque |
Relate forces applied at different locations around a pivot point or center of rotation. |
 |
St = I*a
t = R*F*sin(q) |