object moves along the x axis according to the equation x = 3.80 t^2 - 2.00 t +
ID: 1523110 • Letter: O
Question
object moves along the x axis according to the equation x = 3.80 t^2 - 2.00 t + 3.00, where x is in meters and t is in seconds. Determine the average speed between t = 3.40 s and t = 5.00 s. the average speed is the distance traveled divided by the time. Is the distance traveled equal to the displacement in this Determine the Instantaneous speed at t = 3.40 s Determine the instantaneous speed at t = 5.00 s Determine the average acceleration between t = 3.40 s and t = 5.00 s. Determine the instantaneous acceleration at t = 3.40 s. Determine the instantaneous acceleration at t = 5.00 s. At what time is the object at rest?Explanation / Answer
a) average speed = distance / time
= ([3.8*5^2-2*5+3] - [3.8*3.4^2-2*3.4+3] )/ (5-3.4)
= 29.92 m/s
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