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Summary Grade 12 IEB Physical Sciences - Kinematics Notes (Physics Section A) $2.99   Add to cart

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Summary Grade 12 IEB Physical Sciences - Kinematics Notes (Physics Section A)

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Covers the various sections relating to Kinematics, including Vectors, Displacement, velocity and acceleration, Vertical projectile motion, Graphs of motion and Equations of motion. Includes notes from the textbook, as well as additional class, video and research information, diagrams and practice ...

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  • December 14, 2020
  • 7
  • 2020/2021
  • Summary
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By: gerritcleroux • 3 year ago

Spelling and unwilling to fix it before final exams in November to where I do not need the notes for afterwards.

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Kinematics and mechanics

A. Vectors
Vector representation: Use an arrow

Magnitude
Direction

Vector notation: Put an arrow above symbol

e.g. Velocity = V

Resultant vector:
Biggest when acting in the same direction.
Smallest when acting in opposite directions.
Always between the min and max.

- Graphically
. Tail to head method.



Fnet

- Algebraically
. Use formula.
. Fnet = F1 + F2 + F3

Example:

5,5 N 2,2 N

10,7 N



Method 1: Method 2:

Fnet = F1 + F2 + F3
5,5 N . = 2,2 + (-10,7) + 5,5
. = -3,2
. = 3,2 N down
2,2 N
10,7 N

Fnet

, B. Displacement, Velocity and Acceleration

Position

Symbol: x
Unit: m
Physical quantity: vector

Distance

Symbol: D
Unit: m
Physical quantity: scalar

Displacement

Symbol: Δx
Unit: m
Physical quantity: vector
Formula: xf - xi

Speed

Symbol: V
Unit: m/s
Physical quantity: scalar
𝑡𝑜𝑡𝑎𝑙 𝑑𝑖𝑠𝑡𝑎𝑛𝑐𝑒 (𝑚)
Formula: 𝑡𝑖𝑚𝑒 𝑡𝑎𝑘𝑒𝑛 (𝑠)


Velocity

Symbol: V
Unit: m/s
Physical quantity: vector
𝑑𝑖𝑠𝑝𝑙𝑎𝑐𝑒𝑚𝑒𝑛𝑡 (𝑚) ∆𝑥
Formula: 𝑡𝑖𝑚𝑒 𝑡𝑎𝑘𝑒𝑛 (𝑠) = ∆𝑡

m/s to km/h = x 3.6
km/h to m/s =
3.6

Acceleration

Symbol: a
Unit: m/s2
Physical quantity: vector
𝑣𝑒𝑙𝑜𝑐𝑖𝑡𝑦 (𝑚/𝑠) ∆𝑉
Formula: =
𝑡𝑖𝑚𝑒 𝑡𝑎𝑘𝑒𝑛 (𝑠) ∆𝑡

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