83–84 ■ Falling-Body Problems Suppose an object is droppedfrom a height h0 above the ground. Then its height aftert seconds is given by h  16t2  h0, where h is measured infeet. Use this information to solve the problem.83. If a ball is dropped from 288 ft above the ground, how longdoes it take to reach ground level?84. A ball is dropped from the top of a building 96 ft tall.(a) How long will it take to fall half the distance to groundlevel?(b) How long will it take to fall to ground level?

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Projectile Motion