AP Physics 1 Review of Unit 4 Linear MomentumFlipping Physicshttps://www.youtube.com/watch?v=ufXw3CgzJCk

Vocabulary

• Linear Momentum — A vector quantity, symbolized by $\vec{p}$, equal to the product of an object’s mass and its velocity ($m\vec{v}$). Its direction is the same as the object’s velocity.
• Impulse — A vector quantity, symbolized by $\vec{J}$, equal to the change in an object’s momentum ($\Delta\vec{p}$). It can also be expressed as the average force of impact multiplied by the change in time during the collision ($\vec{F}_{avg}\Delta t$) or the area under a force versus time curve.
• Impulse Approximation — The assumption that during a collision or explosion, the net force acting on an object is approximately equal to the average force of impact ($\sum \vec{F} \approx \vec{F}_{avg}$), because the impact force is much larger than other forces.
• Elastic Collision — A type of collision where the total kinetic energy of the system before the collision is equal to the total kinetic energy of the system after the collision.
• Inelastic Collision — A type of collision where the total kinetic energy of the system after the collision is less than the total kinetic energy of the system before the collision, with some energy converted to other forms like internal energy, thermal energy, or sound.

Questions