What is a scalar quantity?
A quantity that has magnitude but no direction
What is a vector quantity?
A quantity with magnitude and direction
What is the parallelogram law for adding vectors?
Form a parallelogram from the 2 vectors and then draw a line from the initial point to the opposite corner of the parallelogram
What are collinear vectors>
Two or more vectors parallel to the same line irrespective of their magnitudes and direction
What is the dot product of 2 vectors defined as mathematically?
A^ • B^ = AB cos(θ)
What is the dot product of 2 vectors used to calculate?
Tells us how much of the force vector is applied in the direction of the motion vector
What is a point load and how do you represent it?
A point load acts on a fixed point on the body and is represented by an arrow
How do you find the resultant force if you have 2 or more point loads acting on an object at different angles?
Decompose each force into Fx and Fy components, then sum up
