Physics unit 1 6PH01 discussion :)

[MarvinM]

it shud be related to newtons 2nd law accelaration is inversly propotional to mass thts wat i did

Me too

 

[jackoo123]

1

1
i got 185

i got 183.3

 

[Projjal]

What did you guys put for the very last question?

What was that question about i've forgot it

 

[jackoo123]

What was that question about i've forgot it

The description of the motion of the steel ball

 

[Ryan Kelly]

What was that question about i've forgot it

Describe the motion of the solid ball :L

 

[trsa1995]

guys i used the range formula 2*t*cos angle * something for finding t and i used the range of 183 from the next question
i got t as 9 something. when i used 9 in the next part i got 182.9 is it right?

 

[Ryan Kelly]

Also, how do you show the acceleration was 1ms-2 when the ball was at a angle of 7 degrees, it didnt make any sense

 

[cardude456]

Also, how do you show the acceleration was 1ms-2 when the ball was at a angle of 7 degrees, it didnt make any sense

i just did 1cos(7)........which gave me an anwser of 0.99.......hope its right

 

[poizoned black]

epic fail man epic fail ......nuff said

 

[Projjal]

Describe the motion of the solid ball :L

Ohh it was uniform acceleration and constant velocity. And after that it hit the ground ( 1st impact)
it decelerate instantly. And then it bounced back. I wrote this hope its correct.

 

[svenas]

exam was as the same level of jan exam! but i did better! expecting a boundary of 54 for A this time

 

[Ryan Kelly]

i just did 1cos(7)........which gave me an anwser of 0.99.......hope its right

Where'd you get the one from? xD

 

[svenas]

what u guys wrote for the Hookes law question?

 

[cardude456]

Where'd you get the one from? xD

Trust me.............no clue......i was panicked coz of the time and just wrote anything to get the answer!!!

 

[ALevel96]

Answers I got:

12.4 seconds
183.7m
CO2 emissions 0.75kg
Power: 3,057,065.2
Time to burn 25%: 36,000 something seconds
Anyone else get similar answers

 

[Aaron Rodrgp]

i dont think the ball bounced in the last question....i think it was flowing through air with varying velocity...correct me if im wrong

 

[svenas]

Answers I got:

12.4 seconds
183.7m
CO2 emissions 0.75kg
Power: 3,057,065.2
Time to burn 25%: 36,000 something seconds
Anyone else get similar answers

i forgot all my calculation answers but i guess u got most correct!
what u wrote for whether it obeys or not hookes law?

 

[ALevel96]

It did

i dont think the ball bounced in the last question....i think it was flowing through air with varying velocity...correct me if im wrong

bounce it was dropped in air. The sharp decrease in velocity indicates that the ball was in contact with the floor and the difference in time between the two points was the contact time

 

[ALevel96]

I said i

i forgot all my calculation answers but i guess u got most correct!
what u wrote for whether it obeys or not hookes law?

I said that it didn't obey hookes law since the region of direct proportionality occurs long after the non linear region

 

[svenas]

I said i
I said that it didn't obey hookes law since the region of direct proportionality occurs long after the non linear region

i said it didnt obey cauz if we ll extend tht straight region it wont pass thro origin and hookes law sates tht force is proportional to extension - can i get 2 ?