work
energy transferred by a force through a distance
what type of product is work
scalar
work is positive if force and displacement are
in the same direction
work is negative if force and displacement are in
opposite directions
work is zero if force and displacement are
perpendicular
when F is perpendicular to the displacement
no work is done
energy
the ability to do work
kinetic energy
energy an object has due to it's motion
what is needed for mass to gain kinetic energy
positive work must be done
what is needed for mass to lose kinetic energy
negative work must be done
what does kinetic energy depend upon
speed and mass
what type of product is Kinetic energy
scalar