1. An object moves along the x axis according to the equation x = 3.00t2 - 2.00t + 3.00, where x is

in meters and t is in seconds. Determine (a) the average speed between t = 2.00 s and t = 3.00 s,

(b) the instantaneous speed at t = 2.00 s and at t = 3.00 s, (c) the average acceleration between t =

2.00 s and t = 3.00 s, and (d) the instantaneous acceleration at t = 2.00 s and t = 3.00 s. (e) At what

time is the object at rest?

Question

22 August, 23:41

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Answers (1)

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Edward Potter · Answer 1

Instantaneous speed v = dx/dt = 6t - 2

average speed = v (2sec) + v (3sec)

acceleration a = dv/dt = 6

time t = (v+2) / 6