In 10 seconds the surface of the earth at the equator has moved 4600 meters. How far has the surface moved in 150 seconds?

To find out how far the surface has moved in 150 seconds, we can set up a proportion:

x/150 = 4600/10

Cross-multiplying, we get:

10x = 150 * 4600

Dividing both sides by 10, we get:

x = 150 * 4600 / 10

Calculating the right side of the equation, we have:

x = 150 * 4600 / 10 = 69,000

Therefore, the surface of the earth at the equator has moved 69,000 meters in 150 seconds.