Newton’s Laws of Motion (AQA GCSE Physics): Flashcards

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Required practical - Force, mass and acceleration
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Physics law investigated in this practical

Newton's Second Law

Aim of this practical

How force affects acceleration of a moving object

Purpose of the linear air track

Provides smooth, friction-free surface

Purpose of weight stack in this practical

Provides force to pull the glider

Purpose of vacuum cleaner in setup

Creates air cushion to reduce friction

What light gates measure

Velocity and time

Formula for acceleration

a=ΔvΔta = \frac{\Delta v}{\Delta t}

Formula for velocity

v=ΔxΔtv = \frac{\Delta x}{\Delta t}

Why take multiple readings

To improve accuracy and reduce random errors

Why light gates more accurate than stopwatches

Remove human reaction time errors

Expected graph shape: acceleration vs force

Straight line through the origin

Relationship between force and acceleration

Directly proportional

Newton's Second Law equation

F=maF = ma

Effect of doubling the force on acceleration

Acceleration doubles

Safety concern in this practical

Glider can move fast and be dangerous

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