Kinematics formulas • Translation: the change of position vector: ∆𝒙 = 𝒙𝒇𝒊𝒏𝒂𝒍 − 𝒙𝒊𝒏𝒊𝒕𝒊𝒂𝒍 • Velocity: the rate of change of translation: 𝒗=∆𝒙 = ∆𝑡 • Acceleration: the rate of change of velocity 𝒂=∆𝒗 = ∆𝑡 • Trajectory under constant velocity 𝒙(𝑡) = 𝒙𝑖𝑛𝑖𝑡𝑖𝑎𝑙 + 𝒗 𝑡 • Trajectory under constant acceleration 𝒙𝑓𝑖𝑛 −𝒙𝑖𝑛 𝑡𝑓𝑖𝑛 −𝑡𝑖𝑛 𝒗𝑓𝑖𝑛 −𝒗𝑖𝑛 𝑡𝑓𝑖𝑛 −𝑡𝑖𝑛 1 𝒙(𝑡) = 𝒙𝑖𝑛𝑖𝑡𝑖𝑎𝑙 + 𝒗𝑖𝑛𝑖𝑡𝑖𝑎𝑙 𝑡 + 2𝒂 𝒕𝟐 • How to find a trajectory in more than one dimension: solving separately for each axis. • http://physics.bu.edu/~duffy/HTML5/2Dmotion_race.html