b) Now imagine we join the two halves back together using glue, such that the whole ball weighs W newtons. (Assume that the weight of the glue is negligible compared to that of the ball.) Then we drop it from the same height as before, as shown in Figure 2.2. (This is like repeating the previous experiment with d = 0 metres.) W Figure 2.2 i. Will the two joined halves fall faster, slower, or at the same rate as the two separate halves? Why? Prediction: Reason: ii. So, do heavier objects fall faster than lighter ones when air resistance can be ignored? If not, how do they actually fall? iii. During its fall, are any forces acting on the recombined ball other than its weight? (Remember, air resistance is negligible in this scenario.) If yes, what are they? iv. Based on your answer in 2(b)iii, what – if any – is the resultant (unbalanced) force acting on the ball? v. Sketch the speed-time graph of the ball's fall to the ground.
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