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April 24, 2014

Homework Help: physics

Posted by help on Sunday, December 14, 2008 at 8:21pm.

The position of a particle moving along an x axis is given by x = 15t2 - 2.0t3, where x is in meters and t is in seconds.
(a) Determine the position, velocity, and acceleration of the particle at t = 3.0 s.
x = m
v = m/s
a = m/s2

(b) What is the maximum positive coordinate reached by the particle?
m
At what time is it reached?
s

(c) What is the maximum positive velocity reached by the particle?
m/s
At what time is it reached?
s

(d) What is the acceleration of the particle at the instant the particle is not moving (other than at t = 0)?
m/s2

(e) Determine the average velocity of the particle between t = 0 and t = 3 s.
m/s

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