KE = 1/2(100 kg)(100 m/s)^2 = 500000 Joules ----------------------- KE = 1/2(100 kg)(50 m/s)^2 = 125000 Joules ---------------------- 5â¦00000 Joules/125000 Joules = 4 ------ The kinetic energy is reduced by a factor of 4 because the speed is squared.
Earth, the fifth-largest of the eight planets in the Solar System belongs to the Milky Way galaxy and is orbiting about 28,000 light years from the center of the galaxy. It is believed that currently it lies about 20 light years above the galaxy's equatorial plane in the Orion spiral arm.
Click Here to return to the search form. Specifically, the earth and sun revolve around a mutual center of mass (which is very close to the center of the sun). No, the sun is not fixed, but is in its own orbit around the center of the galaxy (the milky way) -- which is also in motion.ow we know that the earth orbits the sun and not the reverse is that relativity assures us that physical laws are similar in any moving frame -- however, objects in a circular orbit are actually in an accelerating frame.