Newton's 1st Law of Motion- As called Law of inertia, the object at rest stays at rest and an object in motion stays at motion with the same speed and same direction unless acted upon by an unbalanced force. v = final velocity, a = acceleration, t = time.
It is known that the object at rest stays at rest until an unbalanced force comes into contact. The soccer ball is at rest until the unbalanced force came upon it, the player's foot. The player's foot would be the unbalanced force that's acting upon the object that's in rest, the ball.
Newton's 2nd Law of Motion states “The change in velocity (acceleration) with which an object moves is directly proportional to the magnitude of the force applied to the object and inversely proportional to the mass of the object.” This can be explained in the equation F=ma.