A ball is thrown straight up into the air from a height of 5 feet and at an initial speed of 20 feet/second. Let s(t) denote the vertical position of the ball (measured in feet), v(t) denote the velocity of the ball (measured in feet/second), and a(t) denote the acceleration of the ball (measured in feet/second2). From physics, we know that s′(t) = v(t) and v′(t) = a(t). The careful reader will notice you have also been given s(0) and v(0) already for this particular situation. If you are told that the ball’s acceleration is given by a(t) = −16, find an equation for the po- sition of the ball (that is, find s(t)). (Hint: you are finding a particular solution of a differential equation with two initial conditions, provided above)

After a dreary day of rain, the sun peeks through the clouds and a rainbow forms. you notice the rainbow is the shape of a parabola. the equation for this parabola is y = -x2 + 36. graph of a parabola opening down at the vertex 0 comma 36 crossing the x–axis at negative 6 comma 0 and 6 comma 0. in the distance, an airplane is taking off. as it ascends during take-off, it makes a slanted line that cuts through the rainbow at two points. create a table of at least four values for the function that includes two points of intersection between the airplane and the rainbow. analyze the two functions. answer the following reflection questions in complete sentences. what is the domain and range of the rainbow? explain what the domain and range represent. do all of the values make sense in this situation? why or why not? what are the x- and y-intercepts of the rainbow? explain what each intercept represents. is the linear function you created with your table positive or negative? explain. what are the solutions or solution to the system of equations created? explain what it or they represent. create your own piecewise function with at least two functions. explain, using complete sentences, the steps for graphing the function. graph the function by hand or using a graphing software of your choice (remember to submit the graph).