2026 ZHSS P2 Q6

2026 ZHSS P2 Q6

Secondary 4
7 marks

A particle travels in a straight line such that the velocity of the particle, \(v\) m/s, \(t\) seconds after leaving a fixed point \(O\), is given by \(v=t^2-9t+20\).

Find the total distance travelled by the particle in the interval \(t=0\) to \(t=7\).[7]

Solution:

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Answer:\(\dfrac{205}{6}\text{ m}=34.2\text{ m}\) (3 s.f.)

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