The Position Function of a Particle Is Given By $s = t ^ { 3 } - 10.5 t ^ { 2 } - 2 t , t \leq 0$

question 67

Essay

The position function of a particle is given by $s = t ^ { 3 } - 10.5 t ^ { 2 } - 2 t , t \leq 0$ When does the particle reach a velocity of $22 \mathrm {~m} / \mathrm { s }$ ?

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