![]() Impulse & Momentum Momentum (p) is defined to be the mass of an object multiplied by it's velocity. It follows then that an ocean liner can have a very large momentum even if it is moving very slowly because of it's large mass. Conversely, a relatively small object, like a bullet, can have a large momentum due to its high velocity. The units of measure for momentum are the same as it compoment parts: (kgm/s) ═══════════════════════════ Impulse (J) is defined as a change of momentum (Δp). Impulse (J) is ALSO defined as the amount of force applied to an object over time (FΔt). It is frequently helpful to take advantage of those two equations by setting them equal to each other. J = Δp and J = FΔt SO Δp = FΔt Examining the physics of the situation (and rearranging terms):
Δp/F = Δt
|
HOMEWORK:
- ===============================