物理state newton's second law of motion

Newton's second law of motion:The rate of change of momentum is proportional to the imposed force and goes in the direction of the force。More specifically:The acceleration a of a body is parallel and directly proportional to the net force F acting on the body,is in the direction of the net force,and is inversely proportional to the mass m of the body,i。e。,F = ma。希望帮到了你,