A cube weighing 100 g is accelerated without friction along the horizontal plane by a horizontal force of 2N.

A cube weighing 100 g is accelerated without friction along the horizontal plane by a horizontal force of 2N. What speed does the cube acquire after 10 meters of movement if its initial speed was equal to zero?

m = 100 g = 0.1 kg
F = 2 H
V0 = 0
S = 10 m
V -?
According to Newton’s 2 law, F = m * a, where a is the body’s acceleration. a = (V ^ 2-V0 ^ 2) / 2 * S since V0 = 0, then a = V ^ 2/2 * S; F = m * V ^ 2/2 * S; V ^ 2 = F * 2 * S / m. So V will be equal to the square root of F * 2 * S / m. V = 20 m / s