deletions | additions       diff --git a/According_to_citet_To_2013_the__.tex b/According_to_citet_To_2013_the__.tex  index f09c4e8..a140d2d 100644  --- a/According_to_citet_To_2013_the__.tex  +++ b/According_to_citet_To_2013_the__.tex 
...
According to \citet{To_2013}, the Information technology has the means to use and integrate their knowledge and developments to create a resource-efficient and environmentally sound solutions for the issues that the society is facing today. IT can also support environmental initiatives and create green awareness. The Internet is being increasingly used as a medium for disseminating environmental awareness to children. For example, the National Institute of Environmental Health Sciences has a web page that hosts small on-line games designed to teach children about the environment. \cite{Zualkernan_2009} But, according to \citet{song2012analysis}, from his study, there are many research focused on environmental protection and pollution control, but the study of water pollution is almost non-existent, especially government and corporate behaviors for water pollution control.  Using the computer in education and recreation is common nowadays. In the study of \citet{Robic_2015}, it is noted that ICT can be great motivational tool for teaching and learning, especially computer games can be great motivational tool. Some games also include physics on it, namely Angry birds. The researchers would want to incorporate the physics projectile model because of the game concept that the researchers wants to design. Projectile motion is a case of motion which can be described as motion in two dimensions, in vertical and horizontal way. In the case of the game the air resistance can be neglected because the game was not designed to include air resistance in projectile motion. The projectile motion is then applied to the garbage in the game play. The following significant formulas formula  are the formulas that the researchers will be using in the game play, \begin{equation*}y_{height}=(v_{0y}\sin\theta)t-\frac{1}{2}gt^{2}+y_{start},\tag{1}\end{equation*}  where \begin{}{ y ystart is the initial starting height from which the garbage will be thrown from the angle theta, and yhighest being the maximum height the garbage can reach in time t while g is the acceleration due to the gravity of the earth which is 9.8m/s^2 and,  \begin{equation*}R\quad =\quad \frac { { { v  }_{ start }\end{} } }^{ 2 }sin2\theta }{ g } \tag{1}\end{equation*}  where vstart is the initial velocity, sintheta as the component along the y-axis, and g being the acceleration due to gravity which is 9.8 m/s^2.