A cannonball is shot up in the air with a vertical speed of 24 miles what is the cannon balls vertical speed just before it hits the ground?

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

J. j. thomson’s experiment disproved the theory that an atom

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)