Problem $12\mathrm{.}98.$

A golfer chips the ball into the hole on the fly from the rough at the edge of the green. Letting

$=4$ and $d=2\mathrm{.}4m,$ verify that the golfer will place the ball within $10mm$ of the center of the

hole if the ball leaves the rough with a speed $v_0=5\mathrm{.}03\frac{m}{s}$ and an angle $=41.$

Figure P$12\mathrm{.}98$

The golfer's chip shot is successful.