EDEXCEL M1 IAL JAN 2019 Q2 Vectors

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Sir, is it possible for you to make a video outlining how to generally, try to solve a paper? I mean, for each topic, what are key things we should look out for, how to logically think for each topic. I mean, each paper is unique, it'd have really helped if you could... show us a way on how to think like you. :) TIA

a.human.

This was very helpful in understanding vectors in general. Thank you

syedjafri

Hi...I know that this is a pretty old video, but if you see this could you please let me know why, in part b we can't use the the method that you suggest we use when finding the position vector of the Lighthouse?

WhateverIttakes-scjx

sir, can you explain more about rA - rB part, how did you get that point

hantornado

At 9:05 (I know I asked a question a few days ago, but I was just reviewing again and I have another question)
Can we say that AB is basically the change in x values from B to A, and the change in y values from B to A? And then the total x values = -k and the total y values also = -k

ThunderBolt

In question 2b, how did you understand the directions in the triangle OAB? I mean, the directions could be the other way also right?

fayzaazminishra

In part (b) why does i equal j vector ?? Why did we substitute as equal in the equation.

shegoisateddy

Sir in part a, why did u took 6÷7 rather then 7÷6 ??

alfas

At 8:18 why would they both be -k? Wouldn't anywhere along the line be south west, meaing the i and j could be different from each other but it's still south west?

ThunderBolt

in 2a by saying direction of motion do they mean direction of velocity and that's why you chose to your the velocity of A to be your equation? if not why did you choose the velocity?

pillarghandour

for finding direction of motion, why did you not dp r=rO+vt using t=4s and then find the bearing of that resultant vector?

hip-mofv

question about vectors:
i never understood how position vectors and constant velocity correlates. how come they aren't in the same place...for example in the question, bird A's *position vector* is 20i-17j, when we draw it in a x-y graph it's in the 4th quadrant, but when we draw the *constant velocity* it's in the 2nd quadrant, completely opposite. hope you understand my question sir

dearlantsov