Paper 1 October/November 2006 Physics (9702) A Level

A stone is thrown upwards from the top of a cliff. After reaching its maximum height, it falls pastthe cliff-top and into the sea.The graph shows how the vertical velocity v of the stone varies with time t after being thrownupwards. R and S are the magnitudes of the areas of the two triangles. What is the height of the cliff-top above the sea?