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I know this is a very basic, basic question. But I'd like to refresh my memory.

In Hubble Law.

##V = H_0 \, D##

##H_0## is Hubble constant, aproximately ##\frac{1}{3.1E17t}##

Okayy, let's say we alter those number to an easier number.

For every 10 metres, the velocity adds 1 m/s.

This is how we write, ok?

##V = 0.1\, D##

And now this.

If an object 1000 metres from us, speeding 100m/s, of course. What time does it takes to reach 4000 metres from us?

Time is Distance / Speed.

What is the formula?

Is this correct?

##\int_a^b \frac{H_0}{x}dx, a = 1000, b = 4000##

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# Hubble Law, integral

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