WME01 01 (Edexcel) M1 January 2021 IAL Q7 Kinematics, Speed Time Graphs

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[cupcakebewwy]

Love your vids so much sir
It’s such a big help
Hope that you keep on posting the amazing content❤️

[wasteaccount]

hello sir, if i were to use v= u+ at
instead (at 8:09)
considering down as postive... since parachuting is going downward...

can i say the accleration = + 3.9 ms^-2 ....?

and
v = 24.5 + 3.9T

[talalnadal]

for c if we use v as -3.9(t) can't we do s=v+u/2 formula can't we find t

[hutheyfasuleiman]

In d how did u know u have to find the total area?

[Flips]

Sir cant we use the s=ut+0.5at^2 equation for part (c) I used it and got the same quadratic equation

[mallard]

sir, i have a problem. Q(a)'s answer is 24.5. But the value has 3 s.f. so why 25 (2 s.f.) is not right?

[mihirbhatt]

Isnt it possible in c to just use vsquared equals usquared plus 2as then use v ewuals u plus at to find t thats a much shorter method

[thaliaissa]

I dont understand how the graph doesnt reach the X axisss, if it hits the ground V should be equal to 0 not a value greater than zer0