Newtons Second Law of Acceleration

Chapter 6 Newtons Second justness of Motion- pull back and speedup The Big judgement An disapprove accelerates when a net array acts on it. 6. 1 Force Causes Acceleration Unbalanced campaigns acting on an object cause the object to accelerate. The combination of foces acting on an object is net force quickening depends in net force. Doubling the force on an object manifold its acceleration. An objects acceleration is directly proportional to the net force acting on it. . 2 Mass Resists Acceleration For a constant force, an increase in the mass will result in a decrease it the acceleration. The same force applied to twice as practic whollyy mass result is only half the acceleration. For a given force, the acceleration produced is mutually proportional to the mass. Inversely means that the two values agitate in opposite steerings. 6. 3 Newtons Second Law Newtons second law states that the acceleration produced by a net force on an object is directly proportional to the order of the net force, is in the same direction as the net force, and is inversely proportional to the mass of the object. Newtons second law describes the human relationship among an objects mass, an objects acceleration, and the net force on an object. In equation form, Newtons second law is create verbally as follows Acceleration is equal to the net force divided by the mass. 6. 4 Friction The force of friction between the surfaces depends on the kinds of material in contact and how the surfaces ar pressed together. Friction acts on materials that are in contact with each other, and it always acts in a direction to oppose relative motion. Liquids and gases are called fluids because they flow. Fluid friction occurs when an object moves by a fluid. Air resistance is the friction acting on something pitiable through air. Chapter 6 Newtons Second Law of Motion-Force and Acceleration 6. Applying ForcePressure For a constant force, an increase in the domain of a fu nction of contact will result in a decrease in the pressure. Pressure is the amount of force per unit of area. In equation form, pressure is defined as follows pressure =force/ area of application or P= F/A Pressure is measured in newtons per true meter, or pascals (Pa). One newton per square meter is equal to atomic number 53 pascal The smaller the area supporting a given force, the great the pressure on that surface. . 6 Free Fall Explained All freely falling objects fall with the same acceleration because the net force on an object is only its weight, and the ratio of weight to mass is the same for all objects. A 10-kg cannonball and a 1-kg stone dropped from an elevated position at the same time will fall together and strike the strand at practically the same time Since mass and weight are proportional, a 10-kg cannonball experiences 10 times as much gravitative force as a 1-kg stone. . 7 Falling and Air vindication The air resistance force an object experiences d epends on the objects speed and area. The force due to air resistance diminishes the net force acting on falling objects. destination speed is the speed at which the acceleration of a falling object is zero because friction balances the weight. Terminal velocity is terminal speed together with the direction of motion.