It has been proposed that North America is moving west at about 2 cm per year. How many kilometers would it move in 5000 years (Note 2 cm is a measurement so your final answer should have significant?

If North America is moving west at 2 cm per year, in 5000 years it would move a total of 2 cm/year × 5000 years = 10,000 cm. To convert centimeters to kilometers, divide by 100,000 (since there are 100,000 cm in a kilometer). Therefore, North America would move 10,000 cm ÷ 100,000 = 0.1 kilometers in 5000 years.