I
o
\2.(
lqt3. In White Rock,o lowtide of 5.2 m occursot 5:00 q.m.ondthe next hightide of t2.6 m occursot 11:00o.m. o) Write o sinusoidol functionthot describesthe tide' tide heightot 1:30p.m.?
y F- F)"+9'1 h+,+sj,n l2
5,2
I2.6 l?,9
g,q
6
fra. =*ZL
/ Aq'
i+,tr+2@
b \ Z._ =o,
?p;a: ZX6h
5,>6
sg
b
t"zb : z_t\ b :2n
6-+ r\
l2_
\-
4. A mossis supportedby o string so thqt it rests 1.8m oboveq tobletop.The mossis pulleddown1.4m ond released.Ittokes0.4 s to reochits moximum height. o) Write on equotionthot describesthe motionof the moss. b) Determinethe heightof the mossofter 1'5s.
[ = l,ut cdlgzR
Fq.:
o's'
Ct-o,Lr)t{,&
zn -T
0'g=4* b
O,9!:- 5 b=2R
o'3
,ww
*-*H =-1,4 Cs?rr+H.* \
{: ;-rrt