Difference between distance and displacement with diagrams

Unlike vector values, distance is never indicated using an arrow since only the size is counted, direction is not of concern. Distance is a physical quantity that can be measured, and it has specific units, either SI units the metric system or English units. In science we use the metric system, with the meter being the standard unit of length. Distance is speed multiplied by time. Since distance is related to both speed and time, if we know two of these values we can obtain the third.

This means if we have speed and distance, we can determine time, and if we have time and distance we can determine speed. Distance can only be positive, and is an absolute value. Distance travelled can also sometimes be greater than the value for displacement. The distance can also be measured along a winding non-straight line.

It does not necessarily have to be a linear measurement. Total distance is not the shortest path but the accumulated intervals, it does not matter where one starts or ends. Total distance covered would be the same regardless of how many times the direction changes, so one could move south, north, east or west.

It would make no difference as you simply sum up the path to derive total distance travelled. What is displacement? Displacement is defined as the change in the position of an object taking into account both its starting and ending point. Movement is relative to a reference point, here relative to the starting point. Displacement is a vector quantity that has both magnitude and direction. In Physics, displacement is indicated using an arrow vector.

The arrow is drawn from the point at which an object starts from and ends where the object ends. The length of the arrow or vector corresponds to the magnitude of the movement while the arrow itself points in the direction of movement. Displacement can have both positive and negative values and can even be zero. Negative values are used to indicate a change to the left. In general, measurement of displacement is done along the straight line, although, its measurement can also be done along curved paths.

Further, the measurement is done considering a reference point. Key Differences Between Distance and Displacement The following points explain the differences between distance and displacement: The amount of space between two points, measured along the actual path, which connects the two points, is called distance.

The amount of space between two points, measured along the minimum path which connects them, is called displacement. Distance is nothing but the length of the total route travelled by the object during motion. On the other hand, displacement is the least distance between starting and finishing point.

Distance gives the complete information of the path followed by the body. As against this, displacement does not give the complete information of the path travelled by the object. Displacement decreases with time, whereas distance does not decrease with time. The value of displacement can be positive, negative or even zero, but the value of the distance is always positive. Distance is a scalar measure, which takes into account the magnitude only, i. Unlike displacement which is a vector measure and takes into account both magnitude and direction.

Distance covered is not the unique path, but the displacement between two locations, is the unique path.

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