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A ball is thrown upward at 15 m/s (v= +15 m/s). Neglecting air friction, it will return to the point from which it
was thrown with a downward speed of 15 m/s (v=-15 m/s). If the acceleration due to gravity is -10 m/s2, how
long will the ball remain in the air?
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answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.

Hi, your answer is not correct. this is a cumulative  

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