Tricky i's and j's Vector Question Number 1: Edexcel A-level Maths Mechanics

Описание: ✅ 𝗙𝗥𝗘𝗘 𝗧𝗥𝗜𝗔𝗟 — 𝗔𝗶𝗺𝗶𝗻𝗴 𝗳𝗼𝗿 𝗔* 𝗼𝗿 𝗚𝗿𝗮𝗱𝗲 𝟵? 🎓 Get weekly structure + live lessons + feedback (small groups). 𝗕𝗼𝗼𝗸 𝘆𝗼𝘂𝗿 𝗳𝗿𝗲𝗲 𝘁𝗿𝗶𝗮𝗹 𝗹𝗲𝘀𝘀𝗼𝗻: https://www.gufficktuition.com/group-... In this video, Lee Guffick breaks down a 10-mark Edexcel A-level Mechanics vector question involving horizontal unit vectors i (east) and j (north). This classic question from the Edexcel Sample Assessment Materials tests your understanding of constant acceleration in vector form, how to interpret motion in northeast directions, and how to apply SUVAT equations with vector components. Ideal for students preparing for Paper 3: Mechanics & Statistics.

⏱️ TIMESTAMPS:
00:00 – Introduction & question setup
01:00 – Part (a) Finding acceleration using vector SUVAT
03:00 – Part (b) Finding displacement vector r in terms of t
05:00 – Part (c) Boat is northeast of origin – equating i and j components
08:00 – Part (d) Boat moving in a northeast direction – vector velocity analysis
11:00 – Bonus insight: What if it said southeast or northwest?

✏️ TOPICS COVERED:

Vector SUVAT using i and j

Displacement vs. velocity vectors

Understanding northeast vs. north-easterly

How to equate vector components to interpret direction

Key vector mechanics techniques for Paper 3

💯 EXAM TIPS:

Always differentiate between location and direction in vector questions

Use geometry (e.g. y = x or y = –x) to deduce relationships between i and j

Revisit this technique for questions involving bearings and vector motion

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