Select the correct answer. A young man sets goal to compete in marathon in two weeks. He started training last week by exercising three to four times a week with his friend. After each
training session he writes his daily experiences to assess problems that may hinder his achievements. What aspect of his fitness program could keep him from
achieving his goal?

Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.