Hello,

I was wondering if I could get some help with a class work problem. I'm in no way asking for just the answer. I need help understanding what the problem is asking for and a push in the right direction

The problem reads:

For the general projectile of exercise 31 ( see below), with h=0 (a) show that the horizontal range is

and (b) find the angle that produces the maximum horizontal range.

1. I not really sure how to how that the equation is in fact the range.

2. I think that i need to calculate the directive of the equation and set it equal to 0 in order to find the maximum. Problem is Im not sure what to differentiate. It feels like its missing a part of the equation, time or distance maybe?

Thank you for any help. Again Not looking for the strait answer just some help

Exercise 31:Beginning with newton's second law of motion, derive the equations of motion for a projectile fired from altitude h above the ground at an angle (Theta) to the horizontal and with the initial speed v(sub 0)