Asked by Adam
the position function of a particle is given by
s=t^3–4t^2–7t t>=0
where s is measured in meters and t in seconds. When does the particle reach a velocity of 10 m/s?
s=t^3–4t^2–7t t>=0
where s is measured in meters and t in seconds. When does the particle reach a velocity of 10 m/s?
Answers
Answered by
bobpursley
Take the derivative:
v=3t^2 -8t -7
put v=10 and rearrange it to have a quadratic in standard format, solve the quadratic with the quadratic formula.
v=3t^2 -8t -7
put v=10 and rearrange it to have a quadratic in standard format, solve the quadratic with the quadratic formula.
Answered by
Adam
i got 1.39 and -4.06 but i still got it wrong
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