4: 5S9 2012 | According to Bernoulli's principle,the still air beneath the paper plane is at a higher pressure and a net upward force lifts the paper planes. (: | Yan Hui | Jien Yue | Tat Shing | Zong Xuan | Guan Hong | Rui Zhi | Phooi Yee | Yuka | Jo-Ee | Rachel | Soo Ying | Nerissa | Jing Wei | Jia Min | please la, we're the two thumbs up ! (: | (:
5: Pei Kee | Constance | Sue Yi | Shin Yi | Junn Yong | Khai Jie | Lian Jiet | Teng Hoong | Yi Zen | Khai Seong | Siong Guan | Choon Kang | Jin Kang | Wei Hong | Jo Ning | Siow Shein | Ley Mun | Wen Shuen | Evenne | Eshen | Wan Yi | Sin Yoong | Zheng Yao
6: 5S9 2012 | 5S9 2012 | todaaay got whuat homework ?