ATAR Notes: Forum

VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Physics => Topic started by: nbalakers24 on July 16, 2009, 07:07:25 pm

Title: Physics - Unit 2 - Help
Post by: nbalakers24 on July 16, 2009, 07:07:25 pm

Hi guys,

Need some help on C in this question:
(http://i30.tinypic.com/2nvbgqu.jpg)


and also in B in this question:

(http://i25.tinypic.com/jafjo0.jpg)


Thanks!

Title: Re: Physics - Unit 2 - Help
Post by: Flaming_Arrow on July 16, 2009, 08:01:49 pm

c ) u = 75 / 3.6 a=-6 v= 0

v^2=u^2+2ad  solve for d

b) u=0 a= 2 d= 8 solve for v

v^2 = u^2+2ad

Title: Re: Physics - Unit 2 - Help
Post by: nbalakers24 on July 24, 2009, 06:29:42 pm

ty man

Title: Re: Physics - Unit 2 - Help
Post by: QuantumJG on July 24, 2009, 11:59:23 pm

Quote from: nbalakers24 on July 16, 2009, 07:07:25 pm

Hi guys,

Need some help on C in this question:
(http://i30.tinypic.com/2nvbgqu.jpg)


and also in B in this question:

(http://i25.tinypic.com/jafjo0.jpg)


Thanks!

8

c)

This question is very simple! Its a suvat problem, since, the accleration is constant

u = 20.83m/s, v = 0m/s, s = ?, a = -6m/s^2

v^2 = u^2 + 2as

0 = 434.03 - 2*6*s

s = 36.17m

9

b)

v = ?, u = 0, a = 2m/s^2, s = 8.0m

v^2 = 0 + 2*2*8

v = 4sqrt(2) m/s

= 5.66m/s