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BJU Physical Sci. 4
BJU Physical Science - Ch 4
Question | Answer |
---|---|
The rate at which speed or velocity of a system increases in a given amount of time. | acceleration |
A scalar quantity that shows the linear dimension a object moved during a time interval. | distance |
A numeric amount that describes the total distance and direction of motion. It is shown graphically with a vector whose tail is the starting point and the tip is the end point. | displacement |
A system of reference points and coordinate axis from which the position and motion of an object can be determined. | frame of reference |
The span of time during which a phenomenon is observed. It is calculated by final time minus initial time. | interval |
The branch of mechanics that describes how things move. It includes measurements and calculations of velocity, acceleration, position, time, and displacement within a frame of reference. | kinematics |
The scientific study of motion and forces which includes kinematics, dynamics, and statics. | mechanics |
The metric unit of weight in kilogram meters per second per second. | Newton |
A study of a part of the universe separately from its surroundings by an boundary that is actual or imaginary. | system |
The rate at which an object changes position. | speed |
The rate at which an object changes position in a specified direction. | velocity |