Skip to content / Đến nội dung
ThichHocToan.com

IMSO 2008 Science International - Theory I Question 6

IMSO Science · IMSO 2008 Science International - Theory I

Question 6

Which one of the following processes does not have a friction force?
  1. A skier sliding down a hill
  2. A space shuttle approaching the Earth
  3. A person swimming
  4. A man climbing a mountain
  5. A space shuttle approaching the Moon