Phương trình chuyển động của một chất điểm dọc theo trục Ox theo chiều dương có dạng x = 15 + 60t (x đo bằng kilomet và t đo bằng giờ). Chất điểm đó xuất phát từ điểm nào và chuyển động với tốc độ bao nhiêu?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Find a mistake in the four underlined parts of the sentence and correct it:

  What he is always late for class makes the teacher angry.

• Find a mistake in the four underlined parts of the sentence and correct it:

  Jane congratulated me with my passing the entrance examination.

• Find a mistake in the four underlined parts of the sentence and correct it:

  I asked her who was she.

• Choose a word that has different stress pattern:

  exciting                  participate                       essential                       preference

• Choose a word that has different stress pattern:

  decision                       situation                             enjoyable                       condition

• Choose the word that has the underlined part pronounced differently from the rest:

  campsite                           confident                           mile                        countryside

• Find a mistake in the four underlined parts of the sentence and correct it:

  Here's the computer program about that I told you.

• Choose the word that has the underlined part pronounced differently from the rest:

  strengthen                         throughout                          clothing                       think

• Choose the word that has the underlined part pronounced differently from the rest:

  firing                        confirm                          require                       desire

• Find a mistake in the four underlined parts of the sentence and correct it:

  That's the man who daughter is studying with me.