1, the basic formula: "Δ ke = w": Δ ke represents the change of kinetic energy, that is, the difference between the final kinetic energy and the initial kinetic energy. W represents the total work done by an external force on an object. This formula shows that the work done by external force on an object is equal to the change of kinetic energy of the object. If the external force does positive work, the kinetic energy of the object increases; If the external force does negative work, the kinetic energy of the object decreases.

2. Kinetic energy formula: "ke =1/2 * m * v2": ke represents the kinetic energy of an object. M stands for the mass of the object. V represents the speed of the object. This formula is used to calculate the kinetic energy of an object, which shows that the kinetic energy of an object is proportional to the square of its mass and velocity.

3. Momentum-kinetic energy relation: "ke = p2/(2m)": p represents the momentum of an object, that is, the product of mass and velocity. This formula reveals the relationship between kinetic energy and momentum, indicating that the kinetic energy of an object is directly proportional to the square of its momentum and inversely proportional to its mass.