Skip to main content
Practice | SPM Add Math

SPM Additional Mathematics (KSSM)

Question
Bahasa Melayu
Rajah 2 menunjukkan lintasan sebuah suar isyarat yang dilepaskan dari puncak sebatang tiang tegak, yang berdiri di atas tanah rata 2 m dari dinding OA sebuah gudang. Ketinggian, dalam m, suar itu dari aras tanah dimodelkan oleh $h(x) = -2x^2 + 24x - 25$, dengan keadaan $x$ ialah jarak mengufuk, dalam m, suar itu dari dinding OA, bagi $x \ge 2$. Suar itu meletup pada titik tertinggi lintasannya, dan serpihannya kemudian jatuh ke tanah, mencecah tanah apabila $h(x) = 0$.
Cari jarak garis lurus, dalam m, antara titik suar itu meletup dengan titik serpihan itu mencecah tanah.
Beri jawapan anda betul kepada dua tempat perpuluhan.

English
Diagram 2 shows the path of a signal flare fired from the top of a vertical pole, which stands on level ground 2 m from the wall OA of a warehouse. The height, in m, of the flare above the ground is modelled by $h(x) = -2x^2 + 24x - 25$, where $x$ is the horizontal distance, in m, of the flare from the wall OA, for $x \ge 2$. The flare bursts at the highest point of its path, and the burnt shell then falls to the ground, reaching it where $h(x) = 0$.
Find the straight-line distance, in m, between the point where the flare bursts and the point where the shell reaches the ground.
Give your answer correct to two decimal places.
AOP15 m2 mbursty = h(x)x
[5 marks]
Preview

Tap to take a photo or choose an image

JPG or PNG accepted
Write with Apple Pencil on iPad (or finger / mouse) — the AI reads your working and grades it.
Type your answer
⌨ Math input▾
Modelled on Selangor trial · Kertas 2 · Q4(b)

Grading your answer... please wait

Modelled on Selangor trial · Kertas 2 · Q4(b)

🔗 Foundation Knowledge Gap Detected

This question requires understanding from these prerequisite chapters. Strengthen your foundations to improve your score.

Chapter 1
Functions
Critical
0%
Not started
Go to Ch.1 — Practice Foundations →
Try it free — the AI marks 3 answers a day. A free account marks 30 a day. Sign up free →
📖 Input mode Study the worked solution, then try one like it. Revealed questions aren't counted. Back to practice mode
ORBIT RAISED // LEVEL UP

Level Up!

Congratulations on your progress!