Conceptual - Work Energy
For each of the following statements, determine whether it is true or false.
True: The work done to raise a box onto a platform does not depend on how fast it is raised.
False: The kinetic energy of an object depends on the direction of the motion involved.
True: If the earth revolves around the sun in a perfectly circular orbit, then the sun does not do any work on the earth.
False: The spring force is a non-conservative force.
False: The kinetic energy does not depend on the reference frame of the observer.
False: Work can be done in the absence of motion.
True: The kinetic energy can never be negative.
True: Spring B is stiffer than A (kA < kB). Less work must be expended on spring A if both springs are stretched by the same amount.
True: The work done to raise a box onto a platform does not depend on how fast it is raised.
False: The kinetic energy of an object depends on the direction of the motion involved.
True: If the earth revolves around the sun in a perfectly circular orbit, then the sun does not do any work on the earth.
False: The spring force is a non-conservative force.
False: The kinetic energy does not depend on the reference frame of the observer.
False: Work can be done in the absence of motion.
True: The kinetic energy can never be negative.
True: Spring B is stiffer than A (kA < kB). Less work must be expended on spring A if both springs are stretched by the same amount.