14.3.6. Material point M 1 kg mass moves in a straight line under a constant force F. The speed point during a time interval τ = t2 - t1, where t2 = 3, t1 = 0, changed from v0 = 2 m / s to v = 5 m / from. Determine the power module F.

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(Chapter 3 - Dynamics theme - 14.3: The theorem of change of momentum) of Reshebnik to the collection of short tasks on the theoretical mechanics Kep OE, JA Viba, OP Grapis, JA Svetinysh et al. Publishing Moscow / Graduate School / 1989, 2009, 2012.
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