Fin M.

asked • 10/18/21

Help needed with math question

1.Given s = t4 − 4t3 − 20t2 + 15t, where t ≥ 0, at what time is the acceleration 0?

2.Given: A particle moves according to a law of motion s = f(t), t ≥ 0, where t is measured in seconds and s in feet. f(t) = t3 − 9t2 + 24t

  1. When is the particle speeding up?
  2. When is the particle slowing down?

Any help is appreciated.

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