Summary

Summary - Physics

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Course
Physics

Institution
12th Grade

These notes contain an in depth summary of the IB physics course. With the use of these notes I was able to achieve a 96% average in SL IB physics and have a complete understanding of the course.

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Uploaded on July 23, 2024
Number of pages 52
Written in 2023/2024
Type Summary

Institution Secondary school
Education 12th Grade
Course Physics
School year 4

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Table of Contents:

Unit Topics

1.Measurements and Uncertainty 1.1 Measurements in physics
1.2 Uncertainties and Error
1.3 Vectors and scalars

2. Mechanics 2.1 Motion
2.2 Forces
2.3 Work Energy Power\
2.4 Impulse and Momentum

3. Thermal Energy 3.1 Thermal Concepts
3.2 Modeling a Gas

4. Waves 4.1 Oscillations
4.2 Travelling Waves
4.3 Wave Characteristics
4.4 Wave Behavior
4.5 Standing waves

5. Electricity 5.1 Electric fields
5.2 Heating effect of electric currents
5.3 Electric cells
5.4 Magnetic effects of electric currents

,Uncertainty:

1.2: Uncertainties and Errors

- Where unit is in the measurement tell us if the value is fractional or absolute
- Round absolute uncertainty to 1 sig fig
Propagating Uncertainty:
Addition and Subtraction

Multiplying and Dividing

,Roots and Powers

- Power or 1/m MULTIPLIED by fractional uncertainty

Mechanics:

2.1: Motion
Graphs Describing Motion:

, Equations of motion for uniform acceleration:
*if acceleration is constant, the following equations can be used

V = final velocity
U = initial velocity
A = acceleration
S = displacement
T = time
Projectile Motion:
Free fall:
−2
Symbol: g Value: 9.81𝑚𝑠
*If only the force acting on a object is the force of gravity, the
object is in free fall

Rules:
−2
1. Acceleration is alway g and always points down -acceleration is 9.81𝑚𝑠 in the
y-component/ vertical direction
−1
2. If the initial velocity = 0𝑚𝑠 the object is in free fall
3. If the object is thrown upwards, its velocity at the highest point = 0

X-direction = the velocity remains the same
Y-direction the velocity changes by 9.81 - add velocities tip to tail method

Rules for 2-D Projectile motion: Movement in both horizontal and vertical direction
1. X-direction acceleration is always 0
2. You can only use kinematic equations for one direction at a time
3. Time is the only variable that changes between x and y components

Wording:
“Launched off” or “falls of flat surface” = NO initial velocity u = 0
‘Highest point in motion” or “Max height reached’ - y-velocity = 0
“Range” = total x displacement

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