Scalars or Vectors
Is a temperature a Scalar or a Vector?
Scalar
How do you represent a Vector on a diagram?
An arrow, length, magnitude, direction = Arrow Head
What is the result of three units East plus four units North,
Five units North East.
What is Negative A if A is six East?
6 West
Define Scalar.
A physical quantity that has a magnitude but has no direction.
Is Velocity a Scalar or a Vector?
Vector
A Vector A is four units East, draw it.
Arrow to the Right
What's the head-to-tail method?
Describe moving the tail from Vector to the head to the other.
How do you do B-A?
B + (-A)
What is a Vector?
A physical quantity that has both magnitude and direction.
Name to Scalar quantities in Physics?
True or False: You can move a Vector parallel to itself.
Add Vectors A + B, where A is 5 East and B is five East.
10
Draw A and -A then A+ (-A). What is the result?
They cancel zero vectors
What is a Resulant?
The sum of two Vectors.
Name two Vector quantities.
Displacement, Velocity, Force, Acceleration.
Draw the Negative Vector B if B is three units North.
Arrow three units south
Show that A + B =B + A with a diagram
Diagram
If you subtract two Vectors and two dimensions, what strategy is it?
Draw a Negative and add Via head to tail.
What is the difference between a Scalar and a Vector?
A vector has direction, while a Scalar doesn't.
Explain why 5 m/s is incomplete as a Vector.
You need Direction
Explain why two different arrow placements, parallel, explain the same Vector.
They have the same Magnitude and Direction
Explain why the order doesn't change the resultant.
Its communitative.
Explain conceptually why subtracting reverses direction.
It's the inverse operation, and it "undoes" addition.
Define the Head to Tail method?
A graphical technique for adding Vectors.