Question 10
Pool players use a cue to shoot balls into pockets. A $4\times3$ pool table has corner pockets $A,B,C,D$ as shown. A ball shot from $A$ enters $B$ after several bounces. If $AB=2020$ and $BC=2019$, which pocket, $A,B,C$ or $D$, does a ball shot in the same way from $A$ enter?
Interpret “the same way” as the 45-degree direction shown, with equal angles of incidence and reflection and pockets only at the four corners.
Interpret “the same way” as the 45-degree direction shown, with equal angles of incidence and reflection and pockets only at the four corners.