posted by Sara .
what are examples of astronomical phenomenon?
Transits of Mercry and Venus across the face of the sun
Phases of moons
Comet impact with another body(rare)
Asteroid impact with another body (rare)
Meteor entering the atmospere
Cosmic ray bursts
thanks drwls :-) I appreciate your help
arrows in the diagram with your velocity as you ride your bike to your friend's house