Write MATLAB code to modify the previous gravity calculation examples as follows (see below for original prompt): If the user enters a zero value for mass, an error message will be generated and the program will terminate; if the user enters a negative value for mass, the program will issue an appropriate warning message and calculate the gravity by using the absolute value of the mass; for strictly positive masses, the program will calculate gravity in the normal manner. Original Prompt: We are given the weight (in variable w) in newtons of an object as well as the mass (in variable m) in kilograms and want to determine the gravity in meters per second squared. To solve this, we will use the equation g = w/m, but we want to wrap that expression inside a conditional just in case the user provides a zero mass, which does not make sense in our situation, but will not cause an error in MATLAB-if you divide a number by 0 in MATLAB, the value "Inf" is calculated, which represents infinity.