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Summary Complete revision notes for EDEXCEL International (GCSE) students-physics- force and motion

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Course
Physics

Institution
9th Grade

The complete revision notes provide the students concept of motion and and forces with worked examples and concept of moment and momentum and practical skills.

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Uploaded on September 14, 2024
Number of pages 25
Written in 2024/2025
Type Summary

motion
force
moment
momentum
stability
speed velocity
acceleration
displacement
resultant force
force and motion

Institution Secondary school
Education 9th Grade
Course Physics
School year 5

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Complete physics summary notes for EDEXCEL International GCSE Specification

Forces and Motion
1. Movement and position ( with exam style worked examples)
* The relationships with speed, distance, time , displacement, velocity and acceleration.
* The motion graphs

2. Forces, stopping distance, changing the shape , momentum and moment (with exam style
worked examples)
* The relationship with force , mass and acceleration and related graphs
* Stopping distance and controlling speed
* Changing the shape of wires and helical springs
* Momentum and car safety
* Moment

Movement and position
Definitions and units:

Speed:Speed is the distance travelled in unit time.
Speed is a scalar quantity.

average speed=v
distance moved = s
time taken = t

Unit: m/s or ms-1 ( metre/second)

Velocity: Velocity is the distance travelled in unit time in a stated direction.
Velocity is a vector quantity.

Unit: m/s or ms-1 ( metre/second)

Distance: Distance between any points.
Distance is a scalar quantity.
Unit: metres (m)

,Complete physics summary notes for EDEXCEL International GCSE Specification

Displacement:Distance moved in a stated direction is called the displacement.
Displacement is a vector quantity.
Unit: metres (m)

Acceleration:Acceleration is the rate at which objects change their velocity.
Acceleration is a vector quantity.

acceleration = a
initial velocity = u
final velocity = v
change in velocity = (v − u )
time taken= t

Unit: m/s2 or ms-1
Deceleration:A negative acceleration is called a deceleration or retardation.

An acceleration is positive if the velocity increases and negative if it decreases. A negative
acceleration is also called a deceleration or retardation.

Distance−time graphs
The slope or gradient of a distance–time graph represents the speed of the body.
If it is a straight line, it shows the uniform or steady speed. If a body is moving with equal distance
in equal time it is known as the uniform speed.

It it is a curved line , it is non-uniform motion.

The steeper the gradient , the faster the motion.
A horizontal line means stationary.

, Complete physics summary notes for EDEXCEL International GCSE Specification

To find the gradient ( speed) of the non-uniform motion , it is drawn a tangent and find the gradient of
the asked point.

Identify the different shapes of distance time graphs.

Velocity – time graph
The slope or gradient of a velocity–time graph represents the acceleration of the body. The steeper the
gradient, the greater the acceleration.
The area under a velocity–time graph measures the distance travelled.

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