You throw a ball vertically upwards and watch its motion. Which of the following statements are true? Assume the "clock" starts ticking the instant the ball leaves your hand... (you can pick more than one!)A. Ball has same velocity when leaving and returning to your handB .Both the acceleration and velocity change signC. The velocitychanges sign, the acceleration does notD. At the top-most point, there is no acceleration on the body

The space within which a test north pole experiences a force magnetic poles 2. a powerful stream of electrons flowing high above the earth in the ionosphere electrojet 3. a concept to explain the directional nature of a magnetic field field lines 4. coil of wire designed to produce a magnetic field by a current passing through its windings ionosphere 5. that region above the earth's atmosphere where particles exist in an ionized state magnetic field 6. the extremities of a magnet where the field lines tend to converge or concentrate aurora borealis 7. a phenomenon that occurs in the northern latitudes; the northern lights solenoid