1.2 — Motion

Core

• 1.2.1 — Define speed as distance travelled per unit time; recall and use v = s/t
• 1.2.2 — Define velocity as speed in a given direction
• 1.2.3 — Recall and use average speed = total distance travelled / total time taken
• 1.2.4 — Sketch, plot and interpret distance–time and speed–time graphs
• 1.2.5 — Determine from graph shape or data whether an object is at rest, moving with constant speed, accelerating or decelerating
• 1.2.6 — Calculate speed from the gradient of a straight-line distance–time graph
• 1.2.7 — Calculate the area under a speed–time graph to determine distance travelled
• 1.2.8 — State that the acceleration of free fall g is approximately constant and is approximately 9.8 m/s²

Supplement

• 1.2.9 — Define acceleration as change in velocity per unit time; recall and use a = Δv/Δt
• 1.2.10 — Determine from speed–time graphs when acceleration is constant or changing
• 1.2.11 — Calculate acceleration from the gradient of a speed–time graph
• 1.2.12 — Know that deceleration is negative acceleration and use this in calculations
• 1.2.13 — Describe motion of objects falling in a gravitational field with and without air resistance, including terminal velocity