Unit 6: Linear Momentum, Impulse, and Collisions

These flashcards cover key concepts related to linear momentum, impulse, and collisions from Unit 6.

Power

Defined as the rate of energy transfer.

Watt

The SI unit of power, equivalent to joules per second (J/s).

Kilowatt-hour (kWh)

A common measure of energy, equal to 3.60 × 10^6 joules.

Momentum

The tendency to continue moving in a specific direction, mathematically defined as p = m⋅v.

Linear Momentum

Momentum of an object moving in a straight line, calculated as the product of mass and velocity.

Angular Momentum

Momentum of an object moving in a circular path about an axis.

Impulse

Defined as the change in momentum, expressed as I = Δp = F⋅Δt.

Conservation of Momentum

The principle stating that the total momentum of an isolated system remains constant.

Elastic Collision

A collision where total kinetic energy is conserved.

Inelastic Collision

A collision in which kinetic energy is not conserved and objects stick together after impact.

Newton’s Second Law

States that the force exerted on an object is equal to the mass multiplied by acceleration (F = m⋅a).