4. A position-time graph plots the course of two runners in a race. Their lines cross on the graph. a.
What does this tell you about the runners?

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

truck y has a greater velocity than truck x.