3. 4. 5. 3. Deep Water William Douglas 1. There was a pool at the in Yakima that offered exactly the opportunity. (a) Y.C.M.A. (b) Y.A.M.C. (c) Y.M.C.A. (d) Y.A.C.M. 2. From the beginning, Douglas had an to the water. (a) intensity (b) aversion (c) intimacy (d) None 3. The water was still, and the tiled bottom was as white and clean as a (a) snow (b) bathroom (c) floor (d) bathtub 4. It seemed a long way down and those nine feet were more like (a) ninety (b) nineteen (c) ninety-nine (d) None 5. Inside the pool, the narrator screamed, but only the heard him. (a) mother (b) coach 6. Only his heart, and the pounding in his head, said that he was still (a) conscious (c) unconscious 7. He started down a time and sucked for air and got water (a) third 8. A fow 6. 7. (c) father (d) water (b) alive (d) dead 8. 9. (b) second (c) last (d) first ho came to know the waters of
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We first consider the vertical motion of the stone as it falls toward the water. The initial y velocity component of the stone is
vyi=visinθ=–(4.00m/s)sin60.00=–3.46m/s
and its y coordinate is
yf=yi+vyit+21ayt2=h+(visinθ)t−21gt2
yf=2.50−3.46t−4.90t2
where y is in m and t in s. We have taken the water’s surface to be at y=0. At the water,
4.90t2+3.46t–2.50=0
Solving for the positive root of the equation, we get
t=2(4.90)
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