What is the velocity of a kiwi in free fall 1.9 seconds after it is
dropped from rest?

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Velocity=total displacement/timefrom house to store is 500 from store to neighbor is 200 therefore total displacement=500+200=700metrestherefore,700metres/910seconds=0.8metres per second

Multiply the 3 dimensions, assuming it is a rectangular cuboid, to get the volume in cm³ divide mass by volume to get density in g/cm³

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction