Kinematics
Five topics on motion in one and two dimensions. Scalars and vectors, the language of position, velocity, and acceleration, how to read motion off a graph, why the answer depends on who is watching, and how all of this generalizes when objects move in two directions at once.
Topics
Equations For every problem in this unit
Velocity from time
$v_x = v_{x0} + a_x t$
Position from time
$x = x_0 + v_{x0}\, t + \tfrac{1}{2} a_x t^2$
Velocity from displacement
$v_x^2 = v_{x0}^2 + 2 a_x (x - x_0)$
Pythagorean
$a^2 + b^2 = c^2$
Sine, opp / hyp
$\sin\theta = \dfrac{a}{c}$
Cosine, adj / hyp
$\cos\theta = \dfrac{b}{c}$
Tangent, opp / adj
$\tan\theta = \dfrac{a}{b}$
Unit 1 tools
Challenge bank
60 open-ended problems.
Read the question, work it out, then flip the card to compare your reasoning to the worked solution. Mark each card so you can return to the ones that still bite.
Question
Tap card to reveal explanation
Worked solution
Tap card to return to question
Nothing here yet.
Switch to All, work through some cards, and tag them as Got it or Revisit.
Cumulative assessment
Test the unit.
Twenty mixed items pulled from across all 5 topics. Identifies which misconceptions still bite when you cannot see which topic the question came from.
20questions
5topics
14codes covered