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Q2) find the velocity v if a particle s position at time t is (s=180 t -16 t²), when
does the velocity vanished?
a) V=180 t – 32, t=6.534 sec.
b) V= 180 t – 16 t2, t=2.576 sec.
c) V= 180 -32t , t=5.625 sec

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