We look at a photograph of many galaxies. Assuming that all of these galaxies formed at the same time after the Big Bang, which galaxies, as seen in the photo, would appear to be the youngest?

What is the final velocity of the initial velocity of 25 and -50?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.