14.3.6
A material point M of mass 1 kg moves along a straight line under the action of a constant force F.
The speed of a point over a period of time? = T2 - t1 where t2 = 3 s, t1 = 0, has changed from v0 = 2 m / s to v = 5 m / s.
Determine the strength modulus F. (Answer 1)