Problem 3 A ball is shot vertically into the air at a velocity of 193.2 ft/s. After 4 sec, another ball is shot vertically into the air. What initial velocity must the 2nd ball have to meet the first ball 386.4 ft from the ground? Problem 4 The position of a particle which moves along a straight line is defined by the relation s

Problem 3 A ball is shot vertically into the air at a velocity of 193.2 ft/s. After 4 sec, another ball is shot vertically into the air. What initial velocity must the 2nd ball have to meet the first ball 386.4 ft from the ground? Problem 4 The position of a particle which moves along a straight line is defined by the relation s