Edwin Hubble's discoveries in the 1920s led to the understanding that the Milky Way is not the only galaxy in the Universe. In a 2 to 3 paragraph essay, describe the five types of galaxies within Hubble classification system.

Edwin Hubble’s discoveries in the 1920s led to the understanding that the Milky Way is not the only galaxy in the Universe. In a 2 to 3 paragraph essay, describe the five types of galaxies within Hubble classification system. Select one of the galaxy types and search online for an example. Include a picture of your example galaxy.
During a NASCAR race a car goes 50 m/s around a curved section of track that has a radius of 250 m. What is the car’s acceleration?