Kokonaisimpulssi
Kokonaisimpulssi is a concept in physics describing the integral of the external force acting on a body over a time interval. It represents the total change in the body’s momentum during that interval. The impulse is defined by J = ∫ F dt, where F is the force vector and t is time. Because momentum p = m v, and for a body with constant mass the impulse equals the change in momentum, J = Δp = p2 − p1. If the force is constant during the interval Δt, then J = F Δt. The units are newton-seconds (N·s), equivalently kilogram meters per second (kg·m/s). The direction of the impulse matches the direction of the force.
The impulse-momentum relation provides a practical framework for analyzing interactions. For example, a bat hitting a
Special cases include short-duration, high-magnitude impulses and long-duration, low-magnitude impulses. Understanding kokonaisimpulssi helps predict outcomes of