Read the following descriptions and indicate whether the objects" KE, PE and TME increases, decreases or remains the same (=). If it is impossible to tell, then answer ???. a A marble begins at an elevated position on top of an inclined ruler and rolls down to the bottom of the ruler. KE- ??? PE = ?? TME: b. A marble is rolling along a level table when it hits a note card and slides to a stop. KE: PE: TME: T ??? C. A cart is pulled from the bottom of an incline to the top of the incline at a constant speed. KE PE: TME: T ??? d. A physics student runs up a staircase at a constant speed. KE ??? PE: ??? TME: . A force is applied to a root beer mug to accelerate it from rest across a level countertop. KE ??? PE: ??? TME: T E ??? f. A pendulum bob is released from rest from an elevated position and swings to its lowest point KE: PE: TME: T A car skids from a high speed to a stopping position along a level highway. KE: ??? PE: ??? TME