A galaxy is found to be moving at 25,000 km/s how far away is the galaxy in Mpc?

Aparticle initially moving east with a speed of 20.0 m/s, experiences an acceleration of 3.95 m/s, north for a time of 8.00 s. what was the speed of the particle after this acceleration, in units of m/s? give the answer as a positive number.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life