7.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{f0e751be-f095-4a56-8ee9-8433cc4873e9-4_236_942_1101_479}
\captionsetup{labelformat=empty}
\caption{Fig. 3}
\end{figure}
Figure 3 shows the path of a golf ball which is hit from the point \(O\) with speed \(49 \mathrm {~ms} ^ { - 1 }\) at an angle of \(30 ^ { \circ }\) to the horizontal. The path of the ball is in a vertical plane containing \(O\) and the hole at which the ball is aimed.
The hole is 170 m from \(O\) and on the same horizontal level as \(O\).
- Suggest a suitable model for the motion of the golf ball.
Find, correct to 3 significant figures,
- the distance beyond the hole at which the ball hits the ground,
- the magnitude and direction of the velocity of the ball when it is directly above the hole.