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GCSE level physics exam revision notes: velocity & acceleration Forces and Motion 2.1 Brief reminders on distance-time graphs and how to interpret them [Author © Dr Phil Brown PhD: Doc Brown's physics exam revision notes suitable for students of UK IGCSE & GCSE level physics courses, ~ US grades 9-10 physics [updated Mar 20th 2026 *][ KEY POINTS and learning objectives for this page, after initial notes]email doc brown: problems?, comments? query? * [privacy & cookies policies & disclaimer] 1.1 Reminders from Forces & motion section 1.
Distance - time graphs
Notes index on acceleration, deceleration, velocity/speed-time graphs about acceleration and deceleration
It is important to recognise all the various 'shapes' of distance - time graphs in preparation to construct and interpret speed or velocity - time graphs, and don't get the two types of graph mixed up! Keywords, phrases and learning objectives for distance-time graphs for a moving object
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shows
acceleration of object, object speeding up, ∆d/∆t gradient increasing.
object shows
zero speed/velocity, ∆d/∆t is constant at zero, object is
stationary.
shows deceleration of object,
object is slowing down, ∆d/∆t is decreasing.
shows
uniform or constant motion in terms of speed/velocity, not acceleration, ∆d/∆t is constant,
but not zero.