Description for speed

Explanation:

Speed is a physical quantity that describes the rate of change of distance with time.

Distance is the length of the path covered by a body.

Time is the duration of the motion of the body

Speed is a scalar quantity that is only concerned with the magnitude of the motion of a body. The direction of motion is not of importance when considering. There are several units of speed depending on the context where it is being used or applied.

                              Speed =

Abbreviated as mg-25.

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o