A ball is rolling straight across the floor until you kick it which newtons law is this

The law that describes the ball's motion after you kick it is Newton's First Law of Motion, also known as the Law of Inertia.

The Newton's law that describes the situation when you kick a rolling ball and it continues to move straight across the floor is the first law of motion, also known as the law of inertia.

The law that explains the motion of the ball after you kick it is Newton's second law of motion. This law is also known as the law of acceleration and is stated as follows:

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. Mathematically, it can be represented as:

F = m * a

where:
F represents the net force acting on the object,
m is the mass of the object, and
a is the acceleration produced.

In the scenario you described, when you kick the ball, you apply a force to it. According to Newton's second law, this force causes the ball to accelerate, meaning its speed or direction of motion changes. The change in motion depends on the magnitude of the force applied and the mass of the ball.