Vektor · Tingkatan 4

Arah dan Magnitud Vektor Pada Grid

Direction and Magnitude of Vectors on a Grid

Soalan

The question

1 (a) PQ⃗ mewakili sesaran 6 km ke kanan. Tentukan sama ada kuantiti berikut ialah kuantiti vektor atau skalar. Kemudian, lukis dan label dalam grid diberi.

An 8 unit × 8 unit square grid is shown with each small square measuring 1 km in length and 1 km in width. An identical answer grid is provided below the answer prompt.

Kertas 1 Percubaan 2026

Untuk mewakili sesaran 6 km ke kanan pada grid, lukis satu garis lurus mengufuk sepanjang 6 unit grid menghala ke kanan dengan anak panah dan labelkan sebagai PQ⃗. Sesaran mempunyai magnitud dan arah, maka ia ialah kuantiti vektor. Pastikan vektor dilukis secara mengufuk mengikut arah yang dinyatakan.

To represent a displacement of 6 km to the right on a grid, draw a horizontal straight line spanning 6 grid units pointing to the right with an arrowhead and label it as PQ⃗. Displacement has magnitude and direction, so it is a vector quantity. Ensure the vector is drawn horizontally.

Tonton penjelasannya

Watch the explanation

VECTOR MISTAKE, grid drawing. 6 km right = horizontal line Count grid units accurately.

40 saat · 40 seconds

Kertas sebenar, sudah ditanda

The marked scripts

Kuantiti vektor dikenal pasti dengan betul tetapi vektor dilukis secara condong ke atas dan bukannya secara mengufuk 6 km ke kanan. The vector quantity is identified correctly, but the vector is drawn diagonally upwards instead of horizontally 6 km to the right.

Pernyataan kuantiti vektor adalah betul tetapi garis yang dilukis pada grid mengarah secara condong ke bawah. The statement of vector quantity is correct, but the line drawn on the grid points diagonally downwards.

Yang salah

What went wrong

Kuantiti: Kuantiti vektor
[Lukis vektor condong sepanjang grid]
[Label PQ⃗ pada garis condong]

Quantity: Vector quantity
[Draw a diagonal vector across the grid]
[Label PQ⃗ on the diagonal line]

Yang betul

The correct working

Kuantiti: Kuantiti vektor
[Lukis garis mengufuk 6 unit ke kanan]

Quantity: Vector quantity
[Draw a horizontal line 6 units to the right]

A 7 by 7 square grid showing a straight line vector starting from point P to point Q with an arrowhead pointing to the right. Point P is located on the first vertical grid line from the left and point Q is on the sixth vertical grid line from the left, both on the middle horizontal grid line.

Kenapa ramai buat silap ini

Why this happens

Murid sering terkeliru dengan melukis garisan senget atau condong apabila mewakili vektor pada grid. Sesaran 'ke kanan' bermaksud garis mengufuk tepat mengikut arah paksi mengufuk, bukannya arah condong.

Pupils often make the mistake of drawing a diagonal line when representing a vector on a grid. A displacement 'to the right' means a strictly horizontal line along the horizontal axis, not a diagonal path.

Markah yang hilang

Marks lost

Kehilangan markah bagi lukisan vektor yang tidak tepat.

Loss of marks for the inaccurate vector drawing.

Chegu Khairi menanda kerja ini setiap minggu

Chegu Khairi marks this every week

Kerja rumah ditanda pada hari yang sama dan dibincangkan dalam kelas berikutnya, jadi kesalahan sebegini dapat diperbetulkan semasa latihan dan bukan berlaku semasa peperiksaan.

Homework is marked the same day and discussed in the next class, so a mistake like this one gets corrected during practice rather than happening in the exam.

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