Kinematics:
Kinematics Pick the right one v =Δx /Δt v f = aΔt + v i Δx = ½aΔt 2 + v i Δt v f 2 – v i 2 = 2 aΔx
Kinematics:
Kinematics Different units m Δx s Δt m/s/s a m/s v i , v f , or Δv
Dynamics:
Dynamics The one and only S F = ma Sometimes 2 or 3 times in one problem
Dynamics:
Dynamics Hardest Part S F +/-, 1D/2D, on which object?
Dynamics:
Dynamics Each direction on each object gets its own S F = ma S F = ma S F = ma S F = ma
Dynamics:
Dynamics So many of the same units S F = ma S F = ma S F = ma m , m , and m in kg a , a , and a in m/s 2 A l l F ’s in N
Kinematics vs. Dynamics:
Kinematics vs. Dynamics Just like 2D Kinematics Draw diagrams Organize your work Break into labeled sections S F = ma S F = ma S F = ma Hanging mass Block on Table Vertical Horizontal