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...
A vector is a mathematical object that has a size, called the magnitude, and a direction. For example, a vector would be used to show the distance and direction something moved in. If you ask for directions, and a person says Walk one kilometer towards North, that's a vector.