If a rock is thrown upward on the planet mars with a velocity of 17 m/s, its height (in meters) after t seconds is given by h = 17t − 1.86t2. (a) find the velocity of the rock after one second.

height of the object is given in terms of time t

now rate of change in height is velocity

so we can say

now at t  = 1 s

so its speed will be 13.28 m/s

the independent variable, or the one that is intentionally manipulated is the speed.

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.