Impact force

Impact force is the force exerted during a brief collision or strike. Its magnitude depends on how momentum changes and how long the interaction lasts.

Impulse: Impulse is the change in an object's momentum, equal to the net force integrated over time. The force-time integral during an impact determines the momentum transferred.
Newton's laws of motion: Newton's laws relate an object's motion to the forces acting on it. The second law connects impact force with acceleration and changing momentum.
Crashworthiness: Crashworthiness is a vehicle or structure's ability to protect occupants during a collision. Designs manage impact forces by controlling deformation and energy absorption.
Pressure: Pressure is force distributed over a unit area. The same impact force can create different pressures across different contact areas.
Momentum: Momentum is the product of an object's mass and velocity, a measure of its motion. Impact forces arise as colliding objects change one another's momentum.
Force: Force is an interaction that can change an object's motion or deform it. Impact force is a brief, collision-driven instance of force.
Impulse test: An impact test measures a material's response to a sudden, high-rate load. Testing reveals whether a material withstands or absorbs brief collision forces.
Stress (mechanics): Mechanical stress is internal force per unit area within a material. Impact force is an external load; stress describes the resulting internal response.
Contact mechanics: Contact mechanics studies forces and deformation where solid bodies touch. It describes how impact force is distributed across the colliding surfaces.
Acceleration: Acceleration is the rate at which velocity changes over time. Large velocity changes over short impact durations produce high acceleration.

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