In what direction does the force of friction act? A. Along the surface, in the same direction as the motion
B. Perpendicular to the surface, pointing down
C. Perpendicular to the surface, pointing up
D. Along the surface, in the direction opposite to the motion

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

The total amount of energy contained in an object