explain about the facts of rocket launching and isro.actually the theory behind physics in that?

Hi,

Arocket launchis thetakeoffphase of the flight of arocket. Launches fororbital spaceflights, or launches intointerplanetary space, are usually from a fixed location on the ground,A rocket is a general term that describes a jet-propelled missile which is propelled forward from the rearward ejection of matter, like hot gases at a high velocity

thanks