Conservation of Momentum (Leaving Cert Applied Maths): Flashcards

$p = mv$

kg m/s

Total momentum constant when no external forces act

Change in momentum of an object

$I = \Delta p = mv_f - mv_i$

Newton-seconds (Ns)

Equal in magnitude, opposite in direction

Total momentum before = Total momentum after

Vector quantity - direction matters

Treat x and y components separately

$I = F \times \Delta t$

At the instant of change