2021 Edexcel A Level Maths Mechanics Walkthrough

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Chapters:
0:00 Introduction
00:10 Q1 - Constant Acceleration
02:34 Q2 - Pullies
10:07 Q3 - Ladders
18:24 Q4 - Projectiles
24:29 Q5 - Variable Acceleration

[hollyr]

This was so helpful thank you so much. Have my mechanics exam tomorrow and have been struggling with mechanics through the whole course but this really helped 😊

[ohmreggienius]

I just wanted to say that I find your explanations excellent. Well done :)

[nvious]

Hey sir, for the projectiles question. If you consider up as positive for the vertical motion. The displacement would be -70 and the acceleration would be positive, so 10?

[adamwood]

Incredibly helpful for last minute applied revision! Thank you so much!

[amirah]

i keep getting confused - when do we use < and when do we use = for the coeff of friction equation ????

[jeddslade]

These are really helpful, thank you !

[ATGzed]

14:25 why did u say R=mg and not R=mgcos

[amirah]

23:00 i don't understand why 60 is v and not u ? since u was 65cosa, why is v taking on its value ???

[rman]

Thank you so much for this your channel is a goldmine

[AlevelStudent-cy]

For Q2, part d, would you just say “ the string would have a mass/weight” Would this be enough to get the mark?

[alexandrugeangos]

Can I just differentiate in column vector form for 1a and b or do I have to use SUVAT because I got the same answers

[prab]

In projectiles questions, how do you know when s/a/u/v are negative?

[Txze-jc]

Thank you so much extremely helpful ❤❤❤❤

[abeeha]

For the projectile question, are we meant to take acceleration as -10 or -9.8? because in a 2020 paper, he took acceleration of -9.8 to a similar question like this

[kimberlygillian]

hello, Thank you for the video. on qn 2 why isn't there a reaction force at the angle? and why is there one at A even if its going to be moving. i read somewhere that the reaction force only occurs at turning points and places that make contact with the surface. please help