Physics, 01.09.2019 03:30 dairysoto9171
(a) if a particle’s position is given by x 4 12t 3t 2 (where t is in seconds and x is in meters), what is its velocity at 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 no. (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 no.
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(a) if a particle’s position is given by x 4 12t 3t 2 (where t is in seconds and x is in meters), wh...
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