Question 14 of 19 Map Sapling Learning This graph shows the relationship between

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Question 14 of 19 Map Sapling Learning This graph shows the relationship between a galaxy's velocity (in km/s) and its distance (in Mpc). This relationship is called Hubble's Law; more distant galaxies are speeding away more quickly. The points represent individual galaxies and the line represents the best fit to the data. 500 If a galaxy has a velocity of 1375 km/s what is a good estimate for its distance? Number 2750 Mpe velocity (km/s) 00 2250 1750 1500 1250 1000 750 500 250 0 5 05 20 2530 35 4550 distance (Mpc) O Previous O Check Ans wer NextExit Hint

Explanation / Answer

14 ] Answer is 20 Mpc.

It can be found by looking at the graph.

slope is constant = 2750/40

1375/d = 2750/40

d = 40*1375/2750

= 20 Mpc

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