Edexcel IAL Physics Unit 1 14 May 2019

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To add on to this question, does anyone know what formulas we will need that will not given to us on the back of the paper?

Original post by : ).

does anyone have all the formulas of unit 1 and 2 noted down ??
itll be helpful thanks..
and THANKU FOR CREATING THIS THREAD @usman200186

Reply 21

: ).

i got the distance of the ball between point X and point Y to be 0.44 m
Question: use measurements from the photograph to calculate the horizontal velocity of the ball. (4)
.i know that i havto use speed=d/t
but which distance do i have to measure? and what time do i havto take ?
after measuring the distance and finding out the time i just havto plug it in the formula right?

Reply 22

Eimmanuel

Study Forum Helper

Original post by ree.x09

This is the mark scheme.
I cant understand why they used 1 there AA8E639D-F240-43FB-B6C6-FF34D559F64F.jpg.jpeg

The MS is using Snell's law.
https://byjus.com/snells-law-formula/

1.00 is the refractive index of the air.

Reply 23

amal29

I'm giving all three. How are you feeling at this point?

I'm very underprepared...

Original post by ree.x09

Me!!

Reply 24

: ).

i was able to do the first part
2....JPG

for the second part it says ....T(vertical) does not change Or T(vertical) = (½) weight
I dont get why the T(vertical) doesn't change..shouldn't it increase (obviously in the end the effect will be nullified) but why is there a mark for this comment in particular?

(edited 4 years ago)

Reply 25

Ems!

You can find the formula for the exam on the link below
Hope that helps :smile:

https://qualifications.pearson.com/en/qualifications/edexcel-a-levels/physics-2015.coursematerials.html#filterQuery=category:Pearson-UK:Category%2FSpecification-and-sample-assessments

Original post by : ).

does anyone have all the formulas of unit 1 and 2 noted down ??
itll be helpful thanks..
and THANKU FOR CREATING THIS THREAD @usman200186

Reply 26

Nighthunter67

Original post by : ).

Time taken is recorded by number of images if 20 pics r takes per second and for one bounce 12 pics r taken it means it took 1.67 seconds for one bounce and the distance taken is the horizontal line u drew the one on the bench at the base of the arc and then yeah just substitute is v=s/t
Someone pls correct me if im wrong

(edited 4 years ago)

Reply 27

Nighthunter67

Original post by : ).

i was able to do the first part
2....JPG

I think theres a mark bcz the fact tht both vectors horizontal and vertical are independent of each other is an important point and i guess the vertical T doesnt change because the downward force (weight) remains constant

(edited 4 years ago)

Reply 28

Nighthunter67

In the questions with the * does our answer need to be in the same order as the mark scheme like the points have to be in the same order??

Reply 29

: ).

if ur considering 12 pics then the time taken is 0.6 seconds ...

Original post by Nighthunter67

wait ..marking scheme to the rescue

Reply 30

Nighthunter67

Original post by : ).

if ur considering 12 pics then the time taken is 0.6 seconds ...
wait ..marking scheme to the rescue

Oop my bad meant to type 0.6 :tongue:

Original post by : ).

So they found scale and then did the same thing i did right?
Oof im stressed for the exam

Reply 33

: ).

i dont get the scale thing
yea except they used 11 pics ..not 12 ...which means 0.55 seconds

Original post by Nighthunter67

So they found scale and then did the same thing i did right?
Oof im stressed for the exam

me tooo..really tensed ...i cant complete the paper in time

Reply 34

Nighthunter67

A week ago i was doing papers fine but now im getting everything wrong

Reply 35

ree.x09

Original post by amal29

I'm giving all three. How are you feeling at this point?

I'm very underprepared...

I’m giving all three too and
I’m good with unit 4 & 6 but unprepared for unit 5 😭

Reply 36

Nighthunter67

Original post by ree.x09

I’m giving all three too and
I’m good with unit 4 & 6 but unprepared for unit 5 😭

Question
how many subjects r u giving

Reply 37

Nighthunter67

Original post by : ).

i dont get the scale thing
yea except they used 11 pics ..not 12 ...which means 0.55 seconds
me tooo..really tensed ...i cant complete the paper in time

If v use 0.6 doesnt the answer still come in the range mentioned :/ ?

Reply 38

: ).

good point..im just curious to why they used 11 pics ..not 12
and what is the purpose of using the scale. why are we cross multiplying..
why dont we just measure the length directly and divide it by the time..

Original post by Nighthunter67

If v use 0.6 doesnt the answer still come in the range mentioned :/ ?

Reply 39

usman200186

Original post by AsithU

You say you predict it will be easy like unit 3 but I actually thought unit 3 was pretty tough? They're not obviously hard questions, but they're all tricky and new :/

You did the old syllabus or new one?

Cuz in the old one all mcqs were pretty easy, the experiment was for finding center of gravity(that I'm practicing from class 7😂), The graph was for plank's constant, formula was given just take readings from graph. And Experiment was finding resistance for thermistor ez pz? You call this tough?