P4 pt1 Flashcards
1
Q
Scalar
A
A quantity with magnitude but no direction
2
Q
Vector
A
A quantity with magnitude and direction
3
Q
What does the direction of an arrow of a vector quantity represent?
A
The direction of the vector
4
Q
What does the size of an arrow of a vector quantity represent?
A
The magnitude of the vector
5
Q
What is a force
A
A push or pull that acts on an object
6
Q
Unit of force
A
A newton
7
Q
What is used to measure force
A
A newton meter
8
Q
What is a contact force?
A
A force that needs to touch to act
9
Q
What is a non contact force?
A
A force that doesn’t need to touch to act
10
Q
Examples of contact forces
A
Friction, air resistance, tension
11
Q
Examples of non contact forces
A
Gravitational, electrostatic and magnetic
12
Q
Examples of scalars
A
Energy, power, speed, Mass
13
Q
Examples of vectors
A
Velocity, acceleration force
