The average distance across an ocean is 16,000 km.Two continents on either side of the ocean are con-verging at a rate of 10 cm/year. How long will it take for them to collide?
The average distance is 16,000 km Converging rate is 10 cm/year 1 km = 100,000 cm = 16,000 × 100,000/10 cm/year = 160,000,000 years It will then take 160 Million years to collide.
