The Big Bang, red-shift and the expanding Universe

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Question 16
Medium

Figure 1 shows a graph of the recessional velocity of several distant galaxies plotted against their distance from Earth.

Figure 1: Recessional velocity vs distance for several distant galaxies

Calculate the gradient of the line of best fit shown in Figure 1.

State the unit.

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The Big Bang, red-shift and the expanding Universe Questions

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