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AQA A Level Physics Mechanics Exam Questions and Answers 100% Solved

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AQA A Level Physics Mechanics Exam Questions and Answers 100% Solved Difference between a scalar and a vector - vector has magnitude (size) and direction, whereas scalar only has magnitude (size). Examples of scalars - speed, mass, time, energy, power Examples of vectors - displacement, veloci...

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  • October 20, 2024
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©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

AQA A Level Physics Mechanics Exam

Questions and Answers 100% Solved


Difference between a scalar and a vector - ✔✔vector has magnitude (size)

and direction, whereas scalar only has magnitude (size).

Examples of scalars - ✔✔speed, mass, time, energy, power

Examples of vectors - ✔✔displacement, velocity, acceleration, force,

weight

Adding perpendicular vectors by calculation - ✔✔draw vectors as a right

angled triangle

use pythagoras' theorem to find magnitude of resultant vector

use trigonometry to calculate the angle of resultant vector (sin=o/h;

cos=a/h; tan=o/a)

Adding vectors

by scale drawing - ✔✔write down scale eg 1cm=2N

draw vectors to correct length and angle to each other "tip to tail"

add the resultant vector line (from original tail to free tip)

, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

measure length and angle of resultant vector

convert length into appropriate quantity (using scale) to find magnitude of

resultant vector

Resolving vectors into two perpendicular components - ✔✔

Resolving components along, and perpendicular to, an inclined slope -

✔✔slide down slop = sine

force dow slope = sintheta

Conditions for equilibrium of two or three coplanar forces acting at a point -

✔✔total resultant force equals zero

or

if the vectors representing the forces are added together they will form a

closed triangle.

Two conditions for a body to remain in equilibrium - ✔✔1. resultant force

acting on body is zero

2. resultant moment about any point is zero

object could be stationary OR travelling at constant velocity

Definition of the moment of a force about a point - ✔✔force multiplied by

the perpendicular distance from the point to the line of action of the force.

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