Question

A ball is thrown straight up from the edge of the roof of a building. A second ball is dropped from the roof a time of 1.14 s later. You may ignore air resistance. Part A If the height of the building is 21.0 m, what must the initial speed be of the first ball if both are to hit the ground at the same time? m/s Submit Request Answer Incorrect; Try Again; 3 attempts remaining Part B Consider the same situation, but now let the initial speed vo of the first ball be given and treat the height h of the building as an unknown. What must the height of the building be for both balls to reach the ground at the same time for vo = 8.90 m/s Submit Request Answer Part C If vo is greater than some value Vmax, a value of h does not exist that allows both balls to hit the ground at the same time. Solve for Vmax Umax m/s Submit Request Answer Part D If vo is less than some value Vmin, a value of h does not exist that allows both balls to hit the ground at the same time. Solvefor min Umin m/s

Answer 1