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Math homework help

Hi Basil , I need help with this math homework that has me stuck on for a while. Im trying to solve this ferris wheel problem. A guy is going to jump off the ferris wheel and land into a cart that is heading towards the base of the wheel. Heres some stuff to know
The ferris wheel has a raidus of 50 feet
The center of the ferris wheel is 65 feet above the ground
The cart starts 240 feet to the left of the base of the wheel
The cart moves right at 15ft/ sec
The water level in the cart is 8 feet above the ground (Don't know if this applies to anything?)
The ferris wheel makes a complete rotation every 40secs
The wheel is turning counterclockwise
When the cart moves, the platform holding the guy on the ferris wheel, starts at 3 o' clock (90 degrees)
We are assuming that the diver will be released and fall straight down, so centripetal and centrifugal forces aren't part of this

So far, the position formula is S=So+Vo+1/2at^2 (So is initial position, Vo is initial velocity) 1/2at^2 is the gravity, and it's 32feet/sec^2 So, S=So+Vo+16t^2.
Im confused on what's the position and what is velocity. Im thinking the velocity is either -50sin(t)+65(this equation might be wrong) or 2. 5pi per sec. I don't know how to apply initial position, is it 0, 90 degrees, 270 degrees ?