0N
2N
3(2t + 3)N
6N
Correct answer is D
F = m * a
d = t\(^2\) + 3t.
a = \(\frac{d^2d}{dt^2}\)
\(\frac{d[d]}{dt}\) = 2t + 3
\(\frac{d^2d}{dt^2}\) = 2m/s\(^2\)
a = 2m/s\(^2\)
F = m * a
F = 3 × 2 = 6N
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