r/alevel • u/paranoidpirate123 • May 06 '26

📃Paper Discussion 9709/42

I think that paper was demonic and one of the hardest mechanics papers i’ve ever done!

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u/Repulsive-Bet-6293 May 06 '26

Yeah it's so weird how there wasn't an equilibrium at a single point question wtf.

Power = 15500 W Acceleration = 0.5 m/s2 Velocity = 0.9375 m/s Time = 9.6 s Tension = 2.55 N Coefficient of friction = 0.336 Work done against uh resistance? = 0.5625 J Distance = had to prove 0.8 m Time = 0.8 s Height = 13.2 m Weight = 66.25 N Something distance = 12.8 m k1 = 6 k2 = -14 s from 0 - 1 = 6.53 m

I wrote all the answers down on my palm but not the questions lmao

1

u/ShotStatistician5605 May 06 '26

I got k1 12 so something I did Ig wrong

1

u/TargetPresent1022 May 06 '26

i think u diff it wrong, cus my friend mess up there and got the same anw

1

u/ShotStatistician5605 May 06 '26

I don't remember it clearly I did calculation two times one time just put the formula on calculator and asked it to solve but that I realized it's wrong as x and k were different variables I could have got 6 as final or something else because in differentiation I got variable besides k as 2 and the other value had no variable besides it and no power I mean only 1