Mathematics, 11.12.2021 02:50, watsonjessalynn

Lacey drops a stone off a cliff. The speed of the stone changes as it falls. The speed is modelled using the formula v= 10t + 15, where v represents the speed of the stone, in metres per second, and t represents the time, in seconds. a) What is the speed of the stone one second after it is dropped?

b) At what time is the speed of the stone 45 m/s?

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Lacey drops a stone off a cliff. The speed of the stone changes as it falls. The speed is modelled

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Lacey drops a stone off a cliff. The speed of the stone changes as it falls. The speed is modelled u...