FA1 · Q4 · A.1, A.2 · kinematics, Newton’s laws, drag, impulse
Q4: a ball falling with air resistance
Free-fall speed, the unit of a drag constant, terminal speed, reading a speed–time graph for area and for k, and the force during a bounce.
SL+HLHarder28 minFree
Hook
Ten marks, four ideas: free fall, units, forces at terminal speed, and impulse. Each part uses a different tool, and the graph ties them together.
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The area under a speed–time graph represents…
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The ball hits the ground at 9.5 m s⁻¹ and rebounds at 7.8 m s⁻¹. The change in speed to use for the impulse is…