Please enable JavaScript.
Coggle requires JavaScript to display documents.
Kinematics (Motion in a straight line (Equations of motion (v = ut+at,…
Kinematics
Motion in a straight line
Rectilinear motion
Equations of motion
v = ut+at
accelerated motion
v2 = u2 + 2as
s = ut + 1/2 at2
Vectors
Dimension/ magnitude
Direction (NSEW)
Velocity
instantaneous
Average
Vav = Δs/Δt
Scalars
Dimension/magnitude
Speed
Average
Distance/time
motion graphs
displacement-time
gradient = velocity
velocity - time
gradient = acceleration
area under graph = displacement
Motion in a plane
relative motion
2 moving cars
Relative to observer
boats on river
Relative to bank
Plane in crosswind
relative to ground
relative velocity
Vectorially
VA rel B = VA - VB
Vector additon
Scaled diagram
Components
Vy = vsinѲ
vx = vcosѲ
Mathematically
sine rule
cosine rule