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Vector Addition and Subtraction
Tail-to-Tip Method of Finding Resultant of Vectors.
Finding Resultant Using Component Method
* Resolve vectors into x & y components
* Sum all the vectors in the x direction to get the resultant for the x direction, and do the same for the y components
* The magnitude of the resultant
Displacement (Δx):
the change in position that goes in a straight-line path from the initial position to the final; it is independent of the path taken.
(SI unit: m)
Linear Motion:
Projectile Motion:
Vertical component of velocity = vsinθ
Horizontal component of velocity = vcosθ
Frictional Forces
Static Friction (f_{s}):
Kinetic Friction (f_{k}):
Static Friction is the force that must be overcome to set an object in motion. It has the formula:
0 ≤ f_{s} ≤ μ_{s}N
Kinetic Frictionopposes the motion of objects moving relative to each other. It has the formula:
f_{k} = μ_{k}N
Equilibrium
First condition of equilibrium:
First condition of equilibrium: An object is in translational equilibrium when the sum of forces pushing it one direction is counterbalanced by the sum of forces acting in the opposite direction.