Mechanics
Forces
Vectors
In
physics, quantities are classified using two categories: scalar quantities and
vector quantities. Scalar quantities are defined purely by its magnitude.
Examples of scalar objects include mass, speed, and distance. Vector quantities
are defined by its magnitude and also by direction. Hence the definition of a
vector; it is an arrow which gives direction and the size of the arrow gives
its magnitude. Some examples include force, torque, velocity, acceleration and
momentum.
Here is some information
about forces:
- Place your right hand
on the first vector, end of your palm must be positioned on the initial
point of the vector
- Curl your hand towards
the second vector
- The
direction in which your thumb is pointing is the direction of the cross
product of the two vectors
