Vectors and scalars Flashcards
Understand the difference between a vector and a scalar Recall the 3 planes of the body Resolve all forces to the planes of the body
What is the definition of a scalar?
Having only magnitude, not direction
What is the definition of a vector?
A quantity having magnitude as well as direction
What its an example of a scalar?
Speed
What is an example of a vector?
Velocity
Speed =
Distance / time
Velocity =
Displacement / time
What must you always have to make a vector?
Direction
When working with resultants, what must you always do?
Always go anti-clockwise with the resultants
What are the criteria for using sin or cos?
Stretch to Y = sin, Compress to x = cos
What is the sagittal plane?
A cut through the middle of the body form the front on
What is the transverse plane?
A cut through the middle of the body from waist to waist
What is the coronal plane of the body?
A cut through the middle of there body from the side on
