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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?
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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?

User Muhammad Hani
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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.
User Yi Wang
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