| A | B |
|---|
| vf^2 = vi^2 + 2aΔx | change in velocity with constant acceleration across a distance |
| vf = vi + at | change in velocity with constant acceleration for a period of time |
| Δx = vit + 1/2 at^2 | change in position with an acceleration for a period of time |
| vx = v cos ϴ | horizontal velocity for velocity at an angle theta |
| vy = v sin ϴ | vertical velocity for velocity at an angle theta |
| F = ma | An object experiencing a net force will acclerate in the direction of that force |
| Ff = μ FN | The force of friction is equal to the coefficint of friction times the normal force |
| ac = v^2/r | Centripetal acceleration is equal to the square of the velocity over the radius of the circle. |
| Fg = mg | Weight is equal to the mass in kilograms times the acceleration of gravity. |
| Fg = FN | On a flat surface, weight is equal to the normal force |
| Fg downhill on an incline = mg sin ϴ | On an inclined plane, the pull of gravity downhill equals the mass times the acceleration of gravity times the sine of the angle of the slope. |
| FN on a slope = mg cos ϴ | On an inclined plane, the normal force is equal to the mass times gravity times the cosine of the angle of the slope. |
| Fg = FT | When an object is hanging from a string and motionless or at a constant velocity weight is equal to tension force. |
| FΔt = mΔv | A force acting for a period of time (Impulse) will change an object's velocity according to its mass (momentum). |
| mivi = mfvf | Initial momentum of a system is equal to the final momentum of a system. |
| KE = 1/2 mv^2 | Kinetic energy is equal to 1/2 the mass times the square of the velocity. |
| GPE = mgh | Gravitational potential energy is equal to the mass times the acceleration of gravity, times the height. |
| KEi + GPEi + Win = KEf + GPEf + Wout | All of the energy in an isolated system "before" is equal to the total energy in a system "after" |
| FG = Gm1m2/r^2 | The force of gravity is equal to the gravitational constant times the product of the objects' masses, divided by the square of the distance between them. |
