(4.1) - Force, energy and momentum Flashcards
1
Q
Define:
Scalars
A
Quantities that have magnitude (size), no direction
2
Q
Define:
Vectors
A
Quanities with magntiude (size), and direction
3
Q
Examples of:
Scalars
A
- speed
- mass
- distance
- time
- force
- energy
- momentum
- volume
- density
- pressure
- electric charge
- temperature
4
Q
Examples of:
Vectors
A
- Velocity
- Force
- Weight
- Displacement
- Accelertaion
- Momentum
5
Q
What scenario has to be occuring to use calculations to add two vectors
A
Vectors must be perpendicular
6
Q
What would the Resultant vecot rbe considered in a right angle triangle
A
The hypotenuse
7
Q
How to calculate the magnitude of the resultant vector (R)
A
- Link two vectors head to tail (at right angle)
- Form the R by linking the tail of (a) to the head of (b)
- Calculate R (hypotenuse) using Pythagoras’ theorem
8
Q
How to calculate an angle in vector triangle
A
Trigonometry (SOH CAH TOA)
