Scientists observe a red shift when observing:

a.) galaxies that are moving closer together

b.) galaxies that are moving apart

c.) galaxies that are growing in size

d.) galaxies that are shrinking

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s. calculate eddy’s power rating

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Why are graphs useful when interpreting data