What two quantities do you need to know to measure speed?

The distance traveled and the time it took to travel that distance.

Explanation:

You take the distance traveled (for example 3 meters), and divide it by the time (three seconds) to get the speed (one meter per second). Calculating the speed of an object, therefore, requires you to measure a distance and the time it takes to travel that distance.

equal distribution i think.

1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.