What is the average velocity of the particle from rest to 9 seconds?
a. 1 meter/second
b. 2 meters/second
c. 3 meters/second
d. 4 meters/second

v = 2[m/s]

Explanation:

This avarage velocity can be found with the following equation:

v = x / dt

where:

x = displacement = 18 [meters]

dt = interval of time = 9 [seconds]

v = 18 / 9

v = 2 [meters/second]

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.