Height above the ground
Height above the ground
Secondary 2
4 marks
TGM Original Questions
Optional extension
The distance \(d\) metres of an object above the ground varies directly with \((t-18)^2\), where \(t\) is seconds. Given \(d=45\) at \(t=3\), find
- the formula connecting \(d,t\), and[2]
- when it reaches the ground.[2]
Solution:
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Answer:(i) \(d=\dfrac15(t-18)^2\) (ii) \(18\) s
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