A rocket-powered sled accelerates uniformly from 22.0 m/s to 140 m/s while undergoing a straight-line path displacement of 275 m. What is the acceleration of the sled?
Acceleration=
A. 33.53 m/s^2
B. 34.76 m/s^2
C. 26.39 m/s^2
D. 29.46 m/s^2
E. 31.94 m/s^2
F. 32.27 m/s^2

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Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".