Originally Posted by
rob101
okay dokey
R = rate of rad absorption (units/sec)
x = distance from the source (feet)
k = constant
now R = k/(x^2)
so 200 units/s = k/(5^2)
therefore k = 5000
now in order to solve this you need to find the total units of rad she absorbed
so that will be the Integral of R with respect to time
you will need to find an expression for the distance with respect to time.
that is to say x= f(t)
probably some kind of parabola
then you will find the Integral of k/(x^2) with respect to time
ie integral of 5000/(f(t)^2) with respect to time
you bastard, the horrible memories are flowing back...... nooooooo
edit: the expression for x is something like x = sqrt((60-ut)^2+60^2)
where sqrt is the square root and u is the chick's velocity