Reference frame
Reference system against which motion is described. E.g.: terrestrial, geocentric.
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Lesson overview
This lesson brings together the PDF, study notes and chapter flow so you can revise Motion without losing the thread.
Reference frame
Reference system against which motion is described. E.g.: terrestrial, geocentric.
Trajectory
Set of successive positions of the moving point. Can be straight, circular, or arbitrary.
Average velocity
v̄ = Δd / Δt (m/s). Distance traveled divided by time elapsed.
Uniform rectilinear motion
Constant velocity, straight trajectory. d = v·t.
Uniformly accelerated rectilinear motion
Constant acceleration a. v = v₀ + at. d = v₀t + ½at².
Statement (Newton's 1st law)
In an inertial frame, if ΣF = 0, the body remains at rest or in uniform rectilinear motion.
Newton's 2nd law
ΣF = m·a. Net force = mass × acceleration.
Experiment 1 - Motion
Lab protocol.
Experiment 2 - Motion
Lab protocol.
Experiment 3 - Motion
Lab protocol.
Experiment 4 - Motion
Lab protocol.
Experiment 5 - Motion
Lab protocol.
Application 1 - Motion
Industrial example.
Application 2 - Motion
Industrial example.
Application 3 - Motion
Industrial example.
Application 4 - Motion
Industrial example.
Application 5 - Motion
Industrial example.
Solution 1 - Motion
Explanation.
Solution 2 - Motion
Explanation.
Solution 3 - Motion
Explanation.
Solution 4 - Motion
Explanation.
Solution 5 - Motion
Explanation.
Solution 6 - Motion
Explanation.
Solution 7 - Motion
Explanation.
Solution 8 - Motion
Explanation.
Solution 9 - Motion
Explanation.
Solution 10 - Motion
Explanation.
Scientific method
Read data, identify the system, choose the model, write relations with SI units, then check the order of magnitude.
Exam focus
Precise definitions, labelled diagrams, unit conversions, document analysis, and justified numerical results.
Forces and motion
Always state the reference frame, system, applied forces, and vector directions before calculating.
Units
Force in newtons (N), mass in kg, distance in m, speed in m/s.