The nature of forces are broadly divided into two categories, and its effects can be presented on an elastic object.
A resultant force is the overall effect of two forces or more acting on an object.
Understanding Resultant Forces
Vector Diagrams: Resultant Force
Vector Diagrams: Equilibrium
Forces at Right Angles
Resolution of Forces
Newton's first law is determined by the value of the resultant force on an object, and how that affects its motion.
Newton's second law describes how acceleration is affected by the mass of an object, or the resultant forces acting on it.
Newton's third law says that for two objects acting on each other, they exert equal and opposite forces.
Circular motion of an object occurs when a resultant force acts on the object for it to change direction constantly.
Turning forces are useful to take advantage of, as the function of levers and gears.
Moment of a Force
Calculating the Moment of a Force
Gears and Levers
Reducing Unwanted Energy Transfers
Forces are what allows transport to be able to move, and come to an emergency stop when it needs to.
Estimating Forces in Transport
Braking Distance 2
Estimating Forces in Deceleration
Momentum is the product of mass and velocity of an object in motion.