Two learners stand on different heights. Learner B drops a ball from rest at a height of
25 m. Learner A projects a ball upwards at a velocity v from a height of 20 m. When the two balls reach the ground, they have the same final velocity. (Take up to be positive)

3.1 Tabulate two differences between distance and displacement. (4)
3.2 How long does it take ball B to reach the ground? (4)
3.3 Calculate the initial velocity of ball A.