Across
- 6. The rate of motion of a system. As with any rate, we express it as a change of position (a distance) with time. It may also be the magnitude of velocity. It is always a scalar quantity.
- 7. The scientific study of forces and motion, which consists of kinematics, dynamics, and statics.
- 8. The geometric space containing the point of reference and coordinate axes from which a person observes or measures position and movement.
- 9. A positive scalar quantity that is the total linear dimension traveled by a moving object during a time interval. It also may be the magnitude of displacement.
- 10. A distinct part of the universe, from elementary particles to galaxies, that we may want to study or measure. It is separated from its surroundings by an actual or imaginary boundary.
Down
- 1. A quantity that describes the net distance and direction of motion. It is always a vector quantity and is represented graphically by a vector arrow whose tail is at the starting point of motion and whose tip is at the ending point.
- 2. The rate of change of the velocity or speed of a system during a time interval. It may be a vector or scalar quantity.
- 3. The rate of displacement of a system. It is always a vector quantity that points in the same direction as the displacement vector of the system.
- 4. A span of time during which we observe a phenomenon. We calculate an interval by subtracting the initial time from the final time. It is always a positive number.
- 5. The science of describing how things move. It involves the measurements and calculations of position, time, velocity, acceleration, and displacement within a reference frame.