With the ability to measure the motion of land masses, continental drift has become an established fact. the north american and european continents are drifting apart at a rate of about 3 cm/y. at this rate how long will it take them to drift 450 km further apart than at present?

It will take them 15×10⁶ years to drift 450 km apart.

1 Km = 10⁵ cm

Therefore,

450 Km = 450×10⁵ cm

Rate = distance / time

3 = 450×10⁵ / time

Cross multiply

3 × time = 450×10⁵

Divide both side by 3

Time = 450×10⁵ / 3

Time = 15×10⁶ years

Learn more about speed, distance and time:

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the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary