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Calculus – Quadratic Equations Practice Set · 4

Name: Calculus – Quadratic Equations Practice Set · 4
Uploaded: 2026-07-30T00:13:48.512Z
Description: A particle moves along a straight line so that its position at time $t \geq 0$ is given by $s(t) = -t^2 + 8t - 7$ (in metres). At what time $t$ does the particle first reach a position of $s = 9$ metres?

Calculus · Calculus

Course: Calculus Book: Calculus

Question

A particle moves along a straight line so that its position at time $t \geq 0$ is given by $s(t) = -t^2 + 8t - 7$ (in metres). At what time $t$ does the particle first reach a position of $s = 9$ metres?

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Calculus – Quadratic Equations Practice Set · 4

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