SME
Grade 11 Science
Motion in one dimension: displacement, velocity and acceleration
The main lesson, then each kind of problem it solves.
Motion in one dimension: displacement, velocity and acceleration
Main lesson
Free fall from rest
Use this for “A stone falls from rest for 3 s. How far does it fall, and how fast is it going?”
Braking distance
Use this for “A car at 25 m/s brakes at 5 m/s² to a stop. How far does it go, and how long does it take?”
Position–time graph: velocity is the slope
Use this for “x = 10 − 6t + t². How fast is it moving at t = 5 s, where is it, and when does it turn round?”
Turning round: displacement and distance
Use this for “A ball rolls up a ramp at 12 m/s and slows at 4 m/s². Where is it after 5 s, and how far has it rolled?”
Reading a motion diagram
Use this for “A strobe photo shows a runner every second. Is the runner speeding up, slowing down or steady?”