Q15 (2 Viewers)

[Timske]

fuck me i forgot how to do the velocity questions ii and onwards, max vel do you differentiate again and then make the x 0 but what the hell is t? i'm so dumb, did that shit so much times.. and the stupid log one i couldn't get k i kept getting like 0.00154 or something is it log2 over 20? screw me i won't come back what done is done, this will just depress me

max v when a = 0 ,

 

[trevorli]

what was 15 b (iv) position of the particle when it is at rest for the first time?

 

[Keelan134]

what was 15 b (iv) position of the particle when it is at rest for the first time?

Find where velocity = 0, sub t into displacement formula from iii

 

[Kostie100]

15 b (4) I got t=60 or pi/3 and then subbed that into displacement formula and got 2metres something.... Hope i got it right.

 

[chillybags]

15b iv... did people get pi/3 - root3 + 3? which equals 2.315 approx?

 

[Kostie100]

15b iv... did people get pi/3 - root3 + 3? which equals 2.315 approx?

YEP

 

[trevorli]

Find where velocity = 0, sub t into displacement formula from iii

Yeee thats what I did, i was just seeing what everyone else got, i got like 2.315 approx :S

 

[trevorli]

15b iv... did people get pi/3 - root3 + 3? which equals 2.315 approx?

+1

 

[Kostie100]

It must be . Unless everyone is doing the same mistake

 

[lgnorance]

you guys are idiots. if 5 people got the same ans then obv its right.... sheesh no need to stress.

 

[RealiseNothing]

15b iv... did people get pi/3 - root3 + 3? which equals 2.315 approx?

I got this.