A a solid cylinder $)=(0\mathrm{.}5M{R}^2,$ solid sphere $)=(0\mathrm{.}4M{R}^2,$ and a hoop $)=(M{R}^2$ start from rest and roll down an incline without slipping. The order of finish $(1$st$,2$nd$,3$ rd $)$ of the objects $(A,B,C)$ at the bottom of the ramp is

a$.$ all arrive at the same time

b$.B,A,C$

c$.C,A,B$

d$.A,C,B$

e$.A,B,C$

A $700-N$ skydiver falls through the air at a terminal velocity of $120$ mph $.$ The magnitude of the air resistance force is

a$.$ none of these

b$.700$ N

c$.70$ N

d$.0$ N

e$.7000$ N