The position s of a point (in feet) is given as a function of time t (in seconds). 4 i t= 2 (a) Find the point's acceleration as a function of t. 8. s"(t) = 3 24 X ft/sec2 4 (b) Find the point's acceleration at the specified time. s"(2) = -0.5 ft/sec? Need Help? Read It

-0.7t The velocity of a rocket is given as a function of time, v=8.9e-º. , t20. The acceleration of the rocket at t= 1.5 seconds is (enter your answer in decimal format) +14

The amount of growth of plants in an ungrazed pasture is a function of the amount of plant biomass already present and the amount of rainfall.t For a pasture in the arid zone of Australia, the following formula gives an approximation of the growth. Y = -55.12 - 0.01535N - 0.00056N? + 3.946R Here Ris the amount of rainfall, in millimeters, over a 3-month period, Nis the plant biomass, in kilograms per hectare, at the beginning of that period, and Y is the growth, in kilograms per hectare, of the biomass over that period. (For comparison, 100 millimeters is about 3.9 inches, and 100 kilograms per hectare is about 89 pounds per acre.) Now we consider the amount of growth Y as a function of the amount of plant biomass N already present. (a) First we assume that the rainfall is 80 millimeters, so R = 80. (1) Find a formula for the growth Y as a function of the amount N of plant biomass already present. kg/ha (ii) Make a graph of Y versus N. Include biomass levels N from 0 to 800 kilograms…

Find y" for the following function. y = 4 cot x y"