Answer Wiki. An ICBM in ballistic flight constantly changes speed and altitude, so it's incorrect to think of a steady speed or altitude. A two- or three-stage booster burns for a few minutes, and accelerates the payload to a velocity of 6-7 km/sec .
The definition of grammar is the study of the way words are used to make sentences. An example of grammar is how commas and semicolons are supposed to be used. that part of the study of language which deals with the forms and structure of words (morphology), with their customary arrangement in phrases and sentences (syntax), and now often with language sounds (phonology) and word meanings (semantics)
For sentence types in traditional grammar, see Sentence clause structure. In linguistics, syntax is the set of rules, principles, and processes that govern the structure of sentences in a given language. The term syntax is also used to refer to the study of such principles and processes.The goal of many syntacticians is to discover the syntactic rules common to all languages.he term syntax is also used to refer to the study of such principles and processes.