Recall the raisin cake model of the universe. our universe is expanding between the galaxies. you measure the recession velocity of galaxy a to be 2,000 km/sec and the recession velocity of galaxy b to be 6,000 km/sec. what can you say about the distances to these galaxies?

Explanation:

Recession velocity of a galaxy is related to the distance at which the galaxy is located. This relationship is given by the hubble constant, as follows:

Hubble constant is aproximate and 1 megaparsec (Mpc) is 3.26*10^6 light years. Rewriting for D:

For galaxy A:

For galaxy B:

what was the acceleration of the 2 kg cart?

⇒ 16.0 cm/s2

what was the acceleration of the 4 kg cart?

⇒ 8.1 cm/s2

what was the acceleration of the 6 kg cart?

⇒ 5.3 cm/s2