Velocity (metric system) as metres per second (m/s) or as the SI base unit of (m⋅s). For example, "5 metres per second" is a scalar, whereas "5 metres per second east" is a vector. If there is a change in speed, direction or both, then the object has a changing velocity and is said to be undergoing an "acceleration". To have a constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion in a straight path thus, a constant velocity means motion in a straight line at a constant speed. For
What Must Be Said What Must Be Said "What Must Be Said" () is a 2012 prose poem by the German writer Günter Grass, recipient of the 1999 Nobel Prize in Literature. The poem discusses an alleged threat of annihilation of the Iranian people and the writer's fears that Germany's delivery to Israel of a sixth Dolphin class submarine capable of carrying nuclear warheads might facilitate an eventual Israeli nuclear attack on Iran, and thus involve his country in a foreseeable crime. The poem was first published on 4 April 2012 by the "Süddeutsche Zeitung", "La Repubblica" and "El País", triggering four days later