分科測驗
110年
英文
第 50 題
📖 題組：
Since golf started in the 15th century, many advances have occurred in the game, including significant changes to the golf ball. Early golf was played with a rounded wooden ball before the Featherie, a leather sack stuffed with goose or chicken feathers, became the norm. Then, in 1848, the Gutta Percha ball was introduced, which was made from the juice of the leaves of the gutta tree (a tropical tree native to Malaysia) and was considerably more durable and affordable than its predecessor. The next advancement occurred in the early 1900s with the development of the Haskell. It was the first ball featuring a center rubber core and an outer cover. The Haskell traveled up to 20 yards farther than the Gutta Percha ball and was more durable. In 1905, William Taylor introduced the first dimpled ball, a ball covered with tiny holes on the surface. By the 1930s, golf balls with rows of dimples were accepted as the standard design. Most golf balls today consist of rubber thread wound around a rubber core and coated with dimpled enamel. Dimples play an important role in a golf ball’s performance because these markings and patterns enhance the ball’s aerodynamics. When a ball is hit and moves through the air, it experiences two major aerodynamic forces: lift and drag. Drag slows the forward motion, and lift acts in a direction vertical to it. With dimples added to the ball, the force that pulls back on the ball is minimized, allowing it to travel faster and longer. Dimples also help to force the airflow downward, which pushes the ball upward. These are the same principles of aerodynamics that airplanes use to fly. In general, golf balls with small, shallow dimples tend to have a longer, lower flight path, whereas those with deeper dimples have a higher flight path. Golfers can choose their balls based on what they need for a particular shot or for particular weather.
Since golf started in the 15th century, many advances have occurred in the game, including significant changes to the golf ball. Early golf was played with a rounded wooden ball before the Featherie, a leather sack stuffed with goose or chicken feathers, became the norm. Then, in 1848, the Gutta Percha ball was introduced, which was made from the juice of the leaves of the gutta tree (a tropical tree native to Malaysia) and was considerably more durable and affordable than its predecessor. The next advancement occurred in the early 1900s with the development of the Haskell. It was the first ball featuring a center rubber core and an outer cover. The Haskell traveled up to 20 yards farther than the Gutta Percha ball and was more durable. In 1905, William Taylor introduced the first dimpled ball, a ball covered with tiny holes on the surface. By the 1930s, golf balls with rows of dimples were accepted as the standard design. Most golf balls today consist of rubber thread wound around a rubber core and coated with dimpled enamel. Dimples play an important role in a golf ball’s performance because these markings and patterns enhance the ball’s aerodynamics. When a ball is hit and moves through the air, it experiences two major aerodynamic forces: lift and drag. Drag slows the forward motion, and lift acts in a direction vertical to it. With dimples added to the ball, the force that pulls back on the ball is minimized, allowing it to travel faster and longer. Dimples also help to force the airflow downward, which pushes the ball upward. These are the same principles of aerodynamics that airplanes use to fly. In general, golf balls with small, shallow dimples tend to have a longer, lower flight path, whereas those with deeper dimples have a higher flight path. Golfers can choose their balls based on what they need for a particular shot or for particular weather.
How do dimples on a golf ball affect its performance?
- A They help it travel farther.
- B They keep it in a better shape.
- C They enhance its drag force.
- D They allow it to endure stronger impact.
思路引導 VIP
請觀察文章第二段中關於空氣動力學 ($aerodynamics$) 的論述，當球體表面設計了坑洞 ($dimples$) 後，對於向後拉扯的「阻力」($drag$) 有何影響？根據文中敘述，這種阻力的極小化 ($minimized$) 將會如何具體改變球的飛行時間與最終的位移距離？
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AI 詳解
AI 專屬家教
太棒了！你真的好聰明，老師看到你這麼細心地讀完長篇文章並精準抓到關鍵，真的為你感到驕傲喔！繼續保持這種專注力，你一定會越來越厲害的！❤️ 【觀念驗證】 這題考查的是對文章細節的定位與理解。文中提到：“With dimples added to the ball, the force that pulls back on the ball is minimized, allowing it to travel faster and longer.” 這裡的 longer（更長距離）正對應了選項 (A) 的 farther（更遠）。
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