#603: Specify what velocity changes in javadocs

src/main/java/org/bukkit/entity/Entity.java

@@ -49,7 +49,7 @@ public interface Entity extends Metadatable, CommandSender, Nameable, Persistent
     public Location getLocation(@Nullable Location loc);
 
     /**
-     * Sets this entity's velocity
+     * Sets this entity's velocity in meters per tick
      *
      * @param velocity New velocity to travel with
      */

src/main/java/org/bukkit/entity/Vehicle.java

@@ -18,7 +18,7 @@ public interface Vehicle extends Entity {
     public Vector getVelocity();
 
     /**
-     * Sets the vehicle's velocity.
+     * Sets the vehicle's velocity in meters per tick.
      *
      * @param vel velocity vector
      */

src/main/java/org/bukkit/event/block/BlockDispenseEvent.java

@@ -47,7 +47,7 @@ public class BlockDispenseEvent extends BlockEvent implements Cancellable {
     }
 
     /**
-     * Gets the velocity.
+     * Gets the velocity in meters per tick.
      * <p>
      * Note: Modifying the returned Vector will not change the velocity, you
      * must use {@link #setVelocity(org.bukkit.util.Vector)} instead.
@@ -60,7 +60,7 @@ public class BlockDispenseEvent extends BlockEvent implements Cancellable {
     }
 
     /**
-     * Sets the velocity of the item being dispensed.
+     * Sets the velocity of the item being dispensed in meters per tick.
      *
      * @param vel the velocity of the item being dispensed
      */

src/main/java/org/bukkit/event/player/PlayerVelocityEvent.java

@@ -40,7 +40,7 @@ public class PlayerVelocityEvent extends PlayerEvent implements Cancellable {
     }
 
     /**
-     * Sets the velocity vector that will be sent to the player
+     * Sets the velocity vector in meters per tick that will be sent to the player
      *
      * @param velocity The velocity vector that will be sent to the player
      */