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5. A toy car of mass 6 kg moves in a straight path, and experiences a net force given by F(t) = -3t.
At time t = 0, the car has a velocity of 4 m/s in the positive direction and is located +8 m from the
origin. The car will come instantaneously to rest at a time t =
a) 2/3 s
b) V4/3 s
c) V8/3 s
d) v8 s
e) 4 s

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Calculus
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