Final answer:
In a frictionless environment and ignoring other forces, a kicked soccer ball would travel in a straight line with constant velocity due to the law of inertia. However, in reality, gravity would affect the ball's motion, making it follow a parabolic path. so, option A is the correct answer.
Step-by-step explanation:
If you kick a soccer ball and there is no friction, will it travel in a straight line with constant velocity? The answer is Yes, provided there are no other external forces acting on the ball, such as air resistance or gravity. In a truly frictionless environment, once the ball is kicked and it starts moving, it would continue to move in a straight line at a constant speed due to Newton's first law of motion, often referred to as the law of inertia. This law states that an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
In the given question, factors like a soccer player, gravity, air, and friction are typically involved in the motion of a kicked ball. However, since the question asks to consider a situation with no friction, we are ignoring friction but still must consider gravity, which would affect the ball's trajectory if it were moving in a real-world scenario. Therefore, the soccer ball would actually follow a parabolic path, not a straight line, due to the influence of gravity pulling it towards the Earth. Air resistance would also play a role, but it is ignored according to the question's conditions.