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)
All languages change over time. What we call grammar is simply. a reflection of a language at a particular time. â¢ Grammar is the mental system of rules and categories that allows humans to form and. interpret the words and sentences of their language. â¢ grammar adds meanings that are not easily inferable from the immediate context.