velocity (m/s) = displacement/time
avg speed (m/s) = total distance/total time
momentum (kgm/s) = mass x velocity
acceleration (m/s/s) = (final velocity x initial velocity)/time taken
force (N) = mass x acceleration
angular velocity (rad/s) = angular displacement/time taken
moment of inertia (kgm squared) = mass x distrubution of mass from axis of rotation
