I’m not really sure but I think it’s D type 1 lever
maximum speed of cheetah is

speed of gazelle is given as

Now the relative speed of Cheetah with respect to Gazelle


now the relative distance between Cheetah and Gazelle is given initially as "d"
now the time taken by Cheetah to catch the Gazelle is given as

so by rearranging the terms we can say


so above is the relation between all given variable
Divide 14 by 6 and there is your answer with the unit of m
The teeth and threads creates roughness that increases the friction between the tire and the road.