Question 1 Report
A particle of mass 3kg moving along a straight line under the action of a F N, covers a line distance, d, at time, t, such that \(d = t^2 + 3t\). Find the magnitude of F at time t.
F = m * a
d = t2 + 3t.
a = d2ddt2
d[d]dt = 2t + 3
d2ddt2 = 2m/s2
a = 2m/s2
F = m * a
F = 3 × 2 = 6N
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