Learning objective
R3 Understand and use weight and motion in a straight line under gravity; use gravitational acceleration g and its value in SI units to varying degrees of accuracy; understand that g is not a universal constant and depends on location.
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Topic
Mechanics
Subtopic
Weight and gravity
Aqa A Level MathematicsPaper 2
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Quick explanation
R3 Understand and use weight and motion in a straight line under gravity; use gravitational acceleration g and its value in SI units to varying degrees of accuracy; understand that g is not a universal constant and depends on location
- This point belongs to Mechanics, especially Weight and gravity.
- You need to be able to r3 Understand and use weight and motion in a straight line under gravity; use gravitational acceleration g and its value in SI units to varying degrees of accuracy; understand that g is not a universal constant and depends on location.
- The key ideas to know are gravity and weight.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
gravityweight
Why it matters
This objective helps connect Weight and gravity to exam-style questions, flashcards, and revision notes for Mechanics.
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Open revision notesRelated learning objectives
- P1 Understand and use fundamental quantities and units in the SI system, including length, time and mass; understand and use derived quantities and units including velocity, acceleration, force, weight and moment.
Quantities and units in mechanics
- Q1 Understand and use the language of kinematics, including position, displacement, distance travelled, velocity, speed and acceleration.
Kinematics language
- Q2 Understand, use and interpret graphs in kinematics for motion in a straight line, including displacement against time with gradient interpretation and velocity against time with gradient and area interpretation.
Kinematics graphs
- Q3 Understand, use and derive the formulae for constant acceleration for motion in a straight line and extend to two dimensions using vectors.
Constant acceleration
- Q4 Use calculus in kinematics for motion in a straight line, including v = dr/dt, a = dv/dt = d^2r/dt^2, r = integral of v dt and v = integral of a dt, and extend to two dimensions using vectors.
Calculus in kinematics