A Small disa, C. Is Ing In vertically upwards of a speed of 15 mis" from the edge of the roof of a build haight 30 in. AFTER 0.5 : a small ball B is shot vertically upwards from the Spotof the building at n speed of 40 mia ' in order to hit disc C. Ignore the offects of gulfesistance 15 m s' OC 30 m 40 m-s O B 3.1 Explain the term projectile 12) 32 Calculate the: 3.21 Time taken by disc C to reach its maximum height (3) 3.2.2 Maximum height above the ground reached by disc C (4) 3.3 Calculate the time from the moment that disc C was thrown upwards until the time ball B hits the disc (6) 3.4 On the same set of axes, sketch graphs of velocity versus time for disk C and ball B from the moment that disc C was thrown upwards until ball 8 hits disc C. Label the graph for ball B as B and the graph for disc C as C. Clearly indicate the following on the graphs: The Initial velocities of ball B and disc C The time at which ball B was shot upward The time at which disc C reaches its maximum height The time at which ball B hits disc C