An object moves on a horizontal coordinate line. Its directed distance s from the origin at the end of t seconds is t – 6t² + 9t feet. (a) When is the object moving to the left? (b) What is the acceleration when its velocity is equal to zero? (c) When is the acceleration positive? (d) When is its speed increasing?

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An object moves on a horizontal coordinate line. Its directed distance s from the origin at the
end of t seconds is tº – 61² + 9t feet.
(a) When is the object moving to the left?
(b) What is the acceleration when its velocity is equal to zero?
(c) When is the acceleration positive?
(d) When is its speed increasing?
Transcribed Image Text:An object moves on a horizontal coordinate line. Its directed distance s from the origin at the end of t seconds is tº – 61² + 9t feet. (a) When is the object moving to the left? (b) What is the acceleration when its velocity is equal to zero? (c) When is the acceleration positive? (d) When is its speed increasing?
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