A 5.0-kg object moving at 2.0 m/s encounters a 20-Newton resistive force over a duration of 0.2 seconds. The final momentum of this object is approximately kg x m/s.

multiply 2kg by latent heat of vap

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.