You throw a baseball from the roof of a house to a friend on the ground. The ball has an initial velocity of 6.0 m/s in the horizontal direction. After 2.00 s, how fast is the ball moving in (a) the x direction and (b) the y direction. A) the velocity in the x-direction doesn’t change. Therefore, after 2.00 seconds we have

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the answer is d.) homologous; have mammary glands

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.