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True or False, please answer only if you are sure: A) The work done by a...

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Physics

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

Answer & Explanation Solved by verified expert
4.3 Ratings (937 Votes)
A the kinetic of an object is independent of the direction of motion involved TRUEKE 12 mV2 where V is the magnitude of the velocity B THe work done to raise a box onto a platform depends on how much time it takes to raise it neglect friction assume it starts on the ground at rest and ends up resting on the platform FALSEWEt Power mght where WE is the work    See Answer
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