A 2550 lb vehicle has a drag coefficient of 0.40 and a frontal area of 18 ft2. The minimum tractive effort required for this vehicle to maintain a 65 mi/h speed on a 5.5% upgrade through an air density of 0.002045 slugs/ft3 is most nearly:

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.

If football was tossed in air without gravity or friction the ball would go into space

The particles of the gas inside the ball heats up, bouncing off each other and spreading farther apart.hope my answer has you : )