# How does momentum and impulse affect a dropped object?

Jul 24, 2015

at the instant before the impact it will have a certain momentum ${\vec{p}}_{1} = m {\vec{v}}_{1}$ (a vector, with modulus AND direction). On impact your object will receive an impulse from the normal force $N \left(t\right)$ (not constant but variable according to the time of contact).
After the impact the momentum ${\vec{p}}_{2} = m {\vec{v}}_{2}$ will be "reversed" compared to the initial one (before impact).