A golf ball is hit from a valleythat lies 20 m below the level “green” (where th

ID: 1753614 • Letter: A

Question

A golf ball is hit from a valleythat lies 20 m below the level “green” (where the holeis located). If the "pin" (the hole) is 150 m from the ball(horizontally) and the ball is hit with an initial speed of 55 m/s,calculate the initial angle(s) that the ball leaves the valleyfloor with and the final velocity vector that the ball lands with(be sure to give both magnitude and direction). If the ballis hit "off line" with the pin and rolls 4.2 m past the cup afterhitting the green, use the following table to estimate the numberof strokes that are required to sink the ball. This table wascompiled from data from golfing professionals.

Putting Distance

Number of Strokesneeded to finish hole

3 feet

1.07

6 feet

1.32

10 feet

1.54

15 feet

1.75

20 feet

1.86

30 feet

1.96

40 feet

2.00

50 feet

2.10