damage. Protective packaging and cushioning help reduce the peak acceleration by extending the duration of the shock or impact. See also Charpy impact test Coefficient of restitution Compression (physical) Cushioning Fall factor Impact driver Impact sensor Impact wrench Impulse (physics) Izod impact strength test Jerk (physics) Road traffic accident Shock Shock data logger Tension (physics) Write-off References Sources Goldsmith, W. (1960). Impact: The Theory and Physical Behaviour of Colliding Solids Dover Publications, Poursartip, A. (1993). Instrumented Impact Testing at High Velocities, Journal of Composites Technology and Research, 15(1). Toropov, AI. (1998). Dynamic Calibration of Impact Test Instruments, Journal of Testing and Evaluation, 24(4). Fracture mechanics Mechanical failure modes Collision