A walker sees a rock fall from the top of a steep cliff and notices that it takes 1.5 seconds for the rock to fall the final third (or 1/3) of the way. • a) What is the height of the cliff in metres? b) In part (a) you get two roots to a quadratic equation and use one of them for your answer. What does the second root represent?

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Chapter3: Vectors
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A walker sees a rock fall from the top of a steep cliff and notices that it takes 1.5 seconds for the rock
to fall the final third ( or 1/3) of the way.
• a) What is the height of the cliff in metres?
b) In part (a) you get two roots to a quadratic equation and use one of them for your answer.
What does the second root represent?
Transcribed Image Text:A walker sees a rock fall from the top of a steep cliff and notices that it takes 1.5 seconds for the rock to fall the final third ( or 1/3) of the way. • a) What is the height of the cliff in metres? b) In part (a) you get two roots to a quadratic equation and use one of them for your answer. What does the second root represent?
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