Select each of the true statements below A. The kinetic energy can be negative. B. If the Moon revolves around Earth in a perfectly circular orbit, then Earth does do work on the Moon. C. Spring A is stiffer than B (kA>kB) . A person must do more work on the block connected to spring A if both springs are ideal and the blocks are pulled by the same amount. D. The work a person must do to raise a box onto a platform does not depend on how fast it is raised. E. The kinetic energy of an object does not depend on the direction of the motion involved. F. Work can be done in the absence of motion. G. The gravitational force is a conservative force. H. The kinetic energy of an object depends on the reference frame of the observer.
Select each of the true statements below
A. The kinetic energy can be negative.
B. If the Moon revolves around Earth in a perfectly circular orbit, then Earth does do work on the Moon.
C. Spring A is stiffer than B (kA>kB) . A person must do more work on the block connected to spring A if both springs are ideal and the blocks are pulled by the same amount.
D. The work a person must do to raise a box onto a platform does not depend on how fast it is raised.
E. The kinetic energy of an object does not depend on the direction of the motion involved.
F. Work can be done in the absence of motion.
G. The gravitational force is a conservative force.
H. The kinetic energy of an object depends on the reference frame of the observer.
I would really appreciate an explanation as to why each option is true or false, so I am sure I understand.
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