Physics Paper-21 !!

[MYLORD]

So......how was the paper ?

 

[R_Ma7mooD]

I dont know tbh xD....dunno whether I did good or bad but was pretty tough for me, as I didnt prepare well for it.

 

[krishan sarna]

it wasnt bad...how was it for you?

 

[MYLORD]

it wasnt bad...how was it for you?

it went gud ....although it was really long for only 1 Hour ...I finished at the last moment...
I wanted to discuss,lets wait for tomorrow....

 

[MYLORD]

it wasnt bad...how was it for you?

so what do u think will be threshold for an A ?

 

[M.Fazy]

so what do u think will be threshold for an A ?

38-42 is a good range for it. Mark my words

 

[ryanfarooqi]

it was tough especially most of my friends and me didn't knew the SI base units of Ohm but the rest was good and the spring contacontconnconstant killed me when I took the correct gradient but then I did this 1/gradient, I guess the threshold might go down since 2014 and 2016 papers are alike but 2015 is new btw 2016 specimen I am talking about.
when I reached Q4 the invigilator said 12min remaining and I was like what The hell?
Wrote what ever I could left the last question since it was 1 mark and writing the solution was no use of earning some points.

 

[ryanfarooqi]

it went gud ....although it was really long for only 1 Hour ...I finished at the last moment...
I wanted to discuss,lets wait for tomorrow....

Too long for 1hr

 

[qwertypoiu]

Yeah I rushed near the end too but it was like an okay paper
Not easy, but not THAT difficult...

 

[Maayee]

does anyone remember the momentum answer?... the mass of the ball?

 

[manya]

does anyone remember the momentum answer?... the mass of the ball?

75g

 

[qwertypoiu]

The answers I remember are:
Q1:
kgm^2s^-3
kgm^2s^-3A^-1
Q2:
acceleration: 9.77777 ms^-2
Distance = 10.4m
Displacement = 2.0m
graph just invert what's below to above
Q3:
75g
inelastic

I've forgotten the questions already...


Last question the ratio was 2

 

[omaaaar]

it was tough especially most of my friends and me didn't knew the SI base units of Ohm but the rest was good and the spring contacontconnconstant killed me when I took the correct gradient but then I did this 1/gradient, I guess the threshold might go down since 2014 and 2016 papers are alike but 2015 is new btw 2016 specimen I am talking about.
when I reached Q4 the invigilator said 12min remaining and I was like what The hell?
Wrote what ever I could left the last question since it was 1 mark and writing the solution was no use of earning some points.

U didn't need to know the SI base unit of ohm u should have used the formula P=VI to get the base unit of V

 

[krishan sarna]

The answers I remember are:
Q1:
kgm^2s^-3
kgm^2s^-3A^-1
Q2:
acceleration: 9.77777 ms^-2
Distance = 10.4m
Displacement = 2.0m
graph just invert what's below to above
Q3:
75g
inelastic

I've forgotten the questions already...


Last question the ratio was 2

I dont think i got the same for question 2, distance was 9.08 while displacement was 2.36m

 

[qwertypoiu]

I dont think i got the same for question 2, distance was 9.08 while displacement was 2.36m

I see...
Well the distance should have been area of triangle above + area of triangle below....
And the displacement should've been the difference between the two areas..
I forgot the exact numbers so I can't verify now..

 

[Solostar]

The answers I remember are:
Q1:
kgm^2s^-3
kgm^2s^-3A^-1
Q2:
acceleration: 9.77777 ms^-2
Distance = 10.4m
Displacement = 2.0m
graph just invert what's below to above
Q3:
75g
inelastic

I've forgotten the questions already...


Last question the ratio was 2

I got same answers as well.

 

[krishan sarna]

I see...
Well the distance should have been area of triangle above + area of triangle below....
And the displacement should've been the difference between the two areas..
I forgot the exact numbers so I can't verify now..

the acceleration was for the rebound when the ball was moving up right?

 

[Maayee]

how about the question with the extension stuff? does anyone remember the strain energy?

 

[Solostar]

how about the question with the extension stuff? does anyone remember the strain energy?

Strain energy was around 0.03 or 0.04, didn't remember properly

Spring constant was 250 Nm-1

 

[saturn21]

75g

Yup I got that too