Determine the mass of the body to which the force of 50 mN imparts an acceleration of 0.2 m / s ^ 2

Determine the mass of the body to which the force of 50 mN imparts an acceleration of 0.2 m / s ^ 2 What displacement the body made in 30 s from the beginning of the movement.

According to Newton’s second law:
F = m * a, where F is the force that imparts acceleration to the body (F = 50 mN = 0.05 N), m is the mass of the body (kg), and is the acceleration of the body (a = 0.2 m / s²).
Body mass:
m = F / a = 0.05 / 0.2 = 0.25 kg.
Distance traveled by the body, taking into account the fact that the initial velocity of the body was equal to zero:
S = a * t² / 2, where t is the time of body movement (t = 30 s).
S = a * t² / 2 = 0.2 * 30² / 2 = 90 m.
Answer: The body weight is 0.25 kg, the body has traveled a distance of 90 m.