GCSE Science/Force

Force is a push or pull that can change the motion of an object Force is an external influence that alters a body's state of rest or its uniform straight-line motion. Motion-Motion refers to the change in an object's position relative to a chosen reference point or frame of reference. It is a core concept that describes how objects move through space over time. Inertia and Mass Inertia-The property of matter that causes it to resist changes to its state of rest or uniform straight-line motion is known as inertia. Inertia can be categorized into three types: Inertia of Rest Inertia of Motion Inertia of Direction Mass-Mass is a measure of the quantity of matter in an object or substance. It is a key property that indicates how much an object resists changes in its motion and how it interacts with gravitational forces. Mass is calculated in  grams (g) or kilograms (kg). Mass is a quantitative measure of Inertia ,more the mass ,more will be the inertia and vice-versa. Newton’s First Laws of Motion An object will remain at pause or continue to move in a straight line path at a constant speed unless external force act upon him. Every object has a natural tendency to resist changes to its state of rest or motion, and this resistance is known as inertia. The second law of motion: The rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force Momentum: The momentum of an object is the product of its mass and velocity and has the same direction as that of the velocity. Its S.I. unit is kg m/s. Third law of motion: To every action, there is an equal and opposite reaction and they act on two different bodies.