3. A particle's position along the x-axis as a function of time is given by x(t) = 7.0- 12t + 2.5t² where x is in meters and t is in seconds. a) Determine this particle's initial position, its initial velocity, and its acceleration. You can compare it to a kinematics equation or simply use calculus. b) Note that the initial velocity is negative. At what time will the particle start moving in the positive direction - that is, when will its velocity be zero, just about to become positive? c) Where will the particle be at that time?
3. A particle's position along the x-axis as a function of time is given by x(t) = 7.0- 12t + 2.5t² where x is in meters and t is in seconds. a) Determine this particle's initial position, its initial velocity, and its acceleration. You can compare it to a kinematics equation or simply use calculus. b) Note that the initial velocity is negative. At what time will the particle start moving in the positive direction - that is, when will its velocity be zero, just about to become positive? c) Where will the particle be at that time?
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter3: Motion Along A Straight Line
Section: Chapter Questions
Problem 79P: Between t=0 and t=t0 , a rocket moves straight upward with an acceleration given by a(t)=ABt1/2 ,...
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