A particle moves along the x axis. Its position is given by the equation x = 1.8+2.5t - 3.9t2with x in meters and t in seconds. (a) Determine its position when it changes direction. (b) Determine its velocity when it returns to the position it had at t= 0? (Indicate the direction of the velocity with the sign of your answer.) m/s
A particle moves along the x axis. Its position is given by the equation x = 1.8+2.5t - 3.9t2with x in meters and t in seconds. (a) Determine its position when it changes direction. (b) Determine its velocity when it returns to the position it had at t= 0? (Indicate the direction of the velocity with the sign of your answer.) m/s
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Transcribed Image Text:A particle moves along the x axis. Its position is given by the equation x = 1.8+2.5t - 3.9t2with x in meters and t in seconds.
(a) Determine its position when it changes direction.
m
(b) Determine its velocity when it returns to the position it had at t=0? (Indicate the direction of the velocity with the
sign of your answer.)
m/s
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