a skateboard rolls horizontally off the top of a staircase and lands at the bottom of the stairs. the staircase has a horizontal length of 15.0 m and the jump last 1.15s. what's the skater's vertical velocity upon landing

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.

Because the sun is the biggest and if the sun orbits the earth we will be dead probably

We can infer that star y is closer but other factors must be considered including the heat of the star, the mass, and the brightness of the star. even though star x seems dimmer it may just be less bright or contain less heat.