Heart rate: Normally heart rate responds to exercise or physiologic demand levels. Usually we don't see it go over 180-200 even with high levels of exercise. This level while tolerated by 'normals' may be dangerous in patients with heart disease or other forms of disease. In other words, one number doesn't fit all.
In physics, motion is a change in position of an object with respect to time. Motion is typically described in terms of displacement, distance (scalar), velocity, acceleration, time and speed. Motion of a body is observed by attaching a frame of r...
Heat is a form of energy that results in the motion of molecules. Heat travels by conduction, convection, or radiation. In conduction, heat spreads through a solid by making its molecules vibrate faster. As faster molecules bump slower ones, the slower ones are made to vibrate faster, and the solid becomes hotter.