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The position of a particle is given by x = (t3)/3 + t2 - 8t -...

The position of a particle is given by x = (t3)/3 + t2 - 8t - 4 and y = t2 + 8t + 3.

1) When, if ever is the particle's SPEED is constant?

Ans: t = 0s, 1s, -4s

2) When is the speed increasing?

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