Impulse & Momentum Reference
Concise reference to impulse, momentum, velocity change and their use in transient structural assessment.
Key definitions
- Impulse J has units N·s
- Linear momentum p=mv
- For a net force history, J=Δp
- For base acceleration, velocity change follows ∫a(t)dt
- Impulse alone does not determine flexible structural peak response
Core relationship
J=∫Fdt=Δp; Δv=∫adt
Use with care
Definitions and notation vary between organisations and standards. Confirm the controlled specification, response quantity, sign convention, damping and units before applying a formula or comparing datasets.