How did the physics 22 paper go?

[awesomaholic101]

That would obviously slow the ball down and besides it said AIR RESISTANCE is negligible.The friction due to sand would be immense and create a weird non-parabolic graph.

Ohh rite ... Y didn't I think about that ... Btw I feel 1 hour is too less for the paper .. it should at least be 1h15m ...

 

[awesomaholic101]

T

The point is it went below the point from which it was thrown. Now it could have been a cliff, a hole, or anything else. It doesn't really matter.

True but still.

 

[asadalam]

Ohh rite ... Y didn't I think about that ... Btw I feel 1 hour is too less for the paper .. it should at least be 1h15m ...

Really?I finished the paper in 40 min.When i had finished i looked up and saw time as 9.40.Then i just started to recheck everything till the time was over.If you do it fast paced from the start you end up with a lot of time on your hands to correct any mistakes you might have done.

 

[AbdullahBShakeel]

I did the same thing but instead of 2.5 and 0.5 i used 2 and 3 :/
and i added it all together to get the distance..

I JUST GOT IT.. We were supposed to do 1/2 x 9.81 x 1.25(sq) + 1/2 x 9.81 x 1.75(sq).. Because the ball is at top at 1.25 s and not 2.5 :|

 

[buckle_crackk]

1+2+3+2=8marks... A friend of mine left radioactivity due to time mismanagement...
Dw still if u've done more than 42 marks ATLEAST, A grade is all yours

wasn't that electricity graph for 2 marks?

 

[awesomaholic101]

Really?I finished the paper in 40 min.When i had finished i looked up and saw time as 9.40.Then i just started to recheck everything till the time was over.If you do it fast paced from the start you end up with a lot of time on your hands to correct any mistakes you might have done.

Yea maybe that's possible if I had a bit more practice ... But I am always a bit weak in time management

 

[awesomaholic101]

Yup it was

wasn't that electricity graph for 2 marks?

 

[asadalam]

Yea maybe that's possible if I had a bit more practice ... But I am always a bit weak in time management

Yeah paper practice helps a lot

I JUST GOT IT.. We were supposed to do 1/2 x 9.81 x 1.25(sq) + 1/2 x 9.81 x 1.75(sq).. Because the ball is at top at 1.25 s and not 2.5 :|

Yup it reached highest point and zero speed at 1.25 s

 

[AbdullahBShakeel]

Yeah paper practice helps a lot

Yup it reached highest point and zero speed at 1.25 s

Do you think they are gonna allow the 2 marks? :/

 

[Aly Emran]

I think my answers to that whole question was wrong ... But someone had answers? I really want them.

I have them but dunno if they are correct but it matched with many students

15 people voted for threshold to be 50-60 damn guys.. Easy on the GT..

Damn O.O.... If this happens, we all are almost doomed O.O

For Q2

Q2 17.2 speed at 3.0s distance was 22.7,displacement 7.33 vertically down

Graph of velocity was a straight line with negative gradient with x intercept at 1.25 and y intercept at 12.2 and on the other side at the end at 3 s it was -17.2

I got the same answers except for -7.33m; i got -7.38m, is it wrong?

 

[asadalam]

Do you think they are gonna allow the 2 marks? :/

I dont think so.You used wrong physics.Maybe 1 mark for a correct idea of the formula to be used.

 

[Aly Emran]

So ur telling the stone sunk into the ground ... I actually considered the possibility but didn't have time to think

 

[asadalam]

I have them but dunno if they are correct but it matched with many students

Damn O.O.... If this happens, we all are almost doomed O.O

I got the same answers except for -7.33m; i got -7.38m, is it wrong?

No as there are slight variations.You might have used the rounded off values but i used direct accurate from calculator like you might've use 7.66 but in my calculator i used 7.6646 etc.And if your method is right theres no penalisation.

 

[Dodo XD]

I JUST GOT IT.. We were supposed to do 1/2 x 9.81 x 1.25(sq) + 1/2 x 9.81 x 1.75(sq).. Because the ball is at top at 1.25 s and not 2.5 :|

Dayum .-.
i got everything wrong :/

 

[Aly Emran]

wasn't that electricity graph for 2 marks?

Oh sorry i forgot to add that X_X

 

[Aly Emran]

No as there are slight variations.You might have used the rounded off values but i used direct accurate from calculator like you might've use 7.66 but in my calculator i used 7.6646 etc.And if your method is right theres no penalisation.

I used 7.66m to 3 sig fig. :/

 

[awesomaholic101]

It IS a possibility ... just not applicable here B/

 

[asadalam]

I used 7.66m to 3 sig fig. :/

Yeah but dont worry,like i said some use from calculators,some round off.If your idea is fully correct you wont lose marks.

 

[AbdullahBShakeel]

No as there are slight variations.You might have used the rounded off values but i used direct accurate from calculator like you might've use 7.66 but in my calculator i used 7.6646 etc.And if your method is right theres no penalisation.

But there will be ecf for displacement right?.. Because i used same method but i subtracted the two so..

 

[asadalam]

But there will be ecf for displacement right?.. Because i used same method but i subtracted the two so..

Yup you'll get full marks there