Un corredor arranca a 4m/s2 durante 1.8segundos, después disminuye su ritmo de velocidad a razón de 0.5m/s2 durante 2.3 segundos. Calcule: c)La velocidad final que alcanzó.
d)La distancia total recorrida

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)