A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of $3\mathrm{.}7$

m$/$s$.$ Two seconds later the bicyclist hops on his bike and accelerates at $2\mathrm{.}1$ m$/$s$2$ until he catches his friend.

A: How much time does it take until he catches his friend $($after his friend passes him$)?$

$**$Express your answer using two significant figures.$**$

B: How far has he traveled in this time?

$**$Express your answer using two significant figures.$**$

C: What is his speed when he catches up$?$

$**$Express your answer using two significant figures.$**$