SOLUTION: A particle moves in a straight line so that its distance, s m, from a fixed point A on the line is given by s=2t24t+9, for t less than or equal to 3, where t is the time in seconds

Question 1081696: A particle moves in a straight line so that its distance, s m, from a fixed point A on the line is given by s=2t24t+9, for t less than or equal to 3, where t is the time in seconds after passing through a point B on the line.
(a) the total distance travelled by the particle in the period of t=0 to t=3. Ans=10m
(b) At t=3, the acceleration of the particle is changed to (t − 8)m/s2 , the instantaneous velocity remaining unchanged. Find the next value of t at which the particle comes to instantaneous rest. Ans= 5s
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
is given by s=2t24t+9
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What does that mean?
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