Stone A is thrown vertically upwards with a speed of 10 m∙s-1 from the edge of the roof of a 40 m high building, as shown in the diagram below.
Ignore the effects of air friction. Take the ground as reference.
3.1 Define the term free fall. (2)
3.2 Calculate the maximum HEIGHT ABOVE THE GROUND reached by stone A. (4)
3.3 Write down the magnitude and direction of the acceleration of stone A at this maximum height. (2)
Stone B is dropped from rest from the edge of the roof, x seconds after stone A was thrown upwards.
3.4 Stone A passes stone B when the two stones are 29,74 m above the ground.
Calculate the value of x. (6)
3.5 The graphs of position versus time for part of the motion of both stones are shown below.
Which of labels a to h on the graphs above represents EACH of the following?
3.5.1 The time at which stone A has a positive velocity (1)
3.5.2 The maximum height reached by stone A (1)
3.5.3 The time when stone B was dropped (1)
3.5.4 The height at which the stones pass each other (1)
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