Question 1101612
{{{ d = k*r^2 }}} where {{{ k }}} is the
constant of proportionality
{{{ 110 = k*50^2 }}}
{{{ k = 110 / 2500 }}}
{{{ k = .044 }}}
-------------------------
{{{ d = .044*r^2 }}}
{{{ d = .044*100^2 }}}
{{{ d = .044*10000 }}}
{{{ d = 440 }}}
----------------------
The car will stop in 440 ft
------------------------
Note that the units on the left must be
the same as the units on the right
[ ft ] = [ k ] x [ mi^2 / hrs^2 ]
So in order to balence the units, {{{ k }}}
must have units of:
[ [ ft x hrs^2 ] / [ mi^2 ]