True or False, please answer only if you are sure:
A) The work done by a constant force acting on an object isindependent of the orientation of the force relative to the motionof the object
B) The work done to raise a box onto a platform depends on how fastit is raised. (Neglect friction, assume it starts on the ground atrest, and ends up resting on the platform)
C) The kinetic energy of a moving object is always positive.
D) The kinetic energy of an object is independent of the directionof the motion involved.
E) Work cannot be done in the absence of motion.
F) The work-energy principle is perfectly valid even when there arefrictional forces acting
