Hey guys im trying to make a shooter game and in the game wherever you tap on the screen a bullet goes there so could anyone give me a sample code for giving and object speed and direction? thanx

You got some great advice when you asked almost the same question a while ago. Smasher's post was particularly relevant to your current question.

If you're stuck on something specific, ask and you'll get lots of help. When you ask a broad question like this you're not likely to get as much help.