an object accelerates to a velocity of 34 m/s over a time of 1.3 s. the acceleration it experienced was 15 m/s2. what was its initial velocity?

Positrons are spontaneously emitted from the nuclei of

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.