Physics 20 Motion In 2-D

Front 1

vector diagram

Back 1

- vectors are represented by a line with an arrow and add up TIP TO TAIL
- magnitude and direction are considered
- the order in which they are added is unimportant

Front 2

collinear vectors

Back 2

vectors in the same dimension
ex. flying a plane north at 100km/h with a 25km/h wind directly south

Front 3

methods of adding vectors

Back 3

cartesian method; using degrees and the cartesian plane
navigator method; using directions and degrees off of a specific N/E/S/W
*always draw out your method before answering a question

Front 4

graphical analysis

Back 4

- where vectors are represented in a diagram with a line; line represents magnitude, arrow represents direction
- vectors are measured out and drawn to scale - a scale must be drawn as well!

Front 5

how to graphically analyze

Back 5

1. select scale and indicate
2. draw vectors to scale using ruler and protractor, drawing TIP to TAIL
3. draw resultant and measure length & direction - answer

Front 6

resultant

Back 6

line going from starting point to finish point on a vector diagram

Front 7

non-collinear vectors

Back 7

vectors that are not along the same plane; they must be resolved before their quantities can be added

Front 8

algebraic analysis

Back 8

method of solving vector problems using trigonometry - more accurate!

Front 9

how to algebraically analyze

Back 9

1. draw diagram with vectors originating from centre
2. resolve all vectors (trig)
3. add all x-components and y-components of all vectors
4. draw vector diagram and find resultant

Front 10

trajectory

Back 10

path of a projectile

Front 11

range

Back 11

horizontal distance travelled by the projectile

Front 12

horizontal events vs vertical events

Back 12

* remember; horizontal and vertical events of a projectile launch are completely separate!
make a table to sort out vert/hor information
ex. without gravity, an object in motion will continue in motion with the same speed and in the same direction

Front 13

horizontally...

Back 13

- projectile travel at constant velocity
-therefore, use constant velocity formulate for calculations involving horizontal components of motion

Front 14

vertically...

Back 14

- projectiles are accelerating downwards (due to gravity)
- use acceleration formulas for calculations involving vertical components

Front 15

projectiles launched at an angle

Back 15

1. draw diagram
2. resolve vectors
3. add separate vectors to table and solve from there

Front 16

relative motion

Back 16

motion measured with respect to an observer