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E) not possible bec
9) A 4.5 kg experimental cart undergoes an acceleration in a straight line (x-axis). The graph shows the
acceleration as a function of time. When is the net force equal to zero?
A) at 0s and 6 s. B) at 0s and 2 s, C) at 2 s and 4 s, D) at 4 s and 6 s 10.0
a, (m/s²)
5.0
2.0
4.0
-1 (s)
6.0

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