Select T-True, F-False, for each statement. If the first is T and the rest F, en
ID: 1784753 • Letter: S
Question
Select T-True, F-False, for each statement. If the first is T and the rest F, enter TFFFFF.
A) The kinetic energy can never be negative.
B) The work-energy principle is perfectly valid even when there are frictional forces acting.
C) The work done to raise a box onto a platform depends on how fast it is raised. (Neglect friction, assume it starts on the ground at rest, and ends up resting on the platform)
D) Work cannot be done in the absence of motion.
E) The kinetic energy of an object depends on the direction of the motion involved.
F) The work done by a constant force acting on an object is independent of the orientation of the force relative to the motion of the object
Explanation / Answer
(A)The kinetic energy can never be negative. = False
B) The work-energy principle is perfectly valid even when there are frictional forces acting.=True
C) The work done to raise a box onto a platform depends on how fast it is raised. (Neglect friction, assume it starts on the ground at rest, and ends up resting on the platform)=True
D) Work cannot be done in the absence of motion.=True
E) The kinetic energy of an object depends on the direction of the motion involved.=False
F) The work done by a constant force acting on an object is independent of the orientation of the force relative to the motion of the object=False
FTTTFF is answer