Salarie de la peur

This lecture covers the modeling of a truck carrying nitroglycerin over a bumpy field, focusing on the motion equation of a mass connected to a spring and a wheel following the ground profile. It also analyzes the forces acting on a rocket in space, considering the conservation of momentum and kinetic energy. The instructor discusses the impact of external forces like gravity and friction on the rocket's motion, deriving the velocity over time and exploring specific cases of collisions in one dimension.