Acknowledge the question and give an honest answer, even if the answer is, "I don't know.". The incorrect response is to close the door in the persons face and/or just walk away, thereby not acknowledging the question or the person.
Chat with our AI personalities
One that answers or attempts to answer the question truthfully.
Its initial speed cannot be 20 m, as stated in the question. Secondly, if the initial speed is correctly given, then there is no need to calculate it!
This is difficult. We are not told what it is we are to calculate. We are not told how the velocity is changing (which it does, implied by the word "initial"). Suggest re-writing the question.
Putting a question mark after a statement does not convert it to a sensible question. My response to your question is "So what?"
Yes, we certainly do try here at Answers.com to provide a proper answer to a properly worded question.