4.2.3 Conservation of Momentum

Front

What does momentum depend on?

Back

Momentum depends on an object's mass and velocity.

Front

What is the relationship between momentum before and after a collision?

Back

The momentum before a collision (P_before) is equal to the momentum after the collision (P_after).

Front

If the speed of an object is doubled, what happens to its momentum?

Back

If the speed of an object is doubled, its momentum also doubles.

Front

What is the formula for momentum?

Back

The formula for momentum (p) is p = mass (m) × velocity (v).

Front

What is the unit of momentum?

Back

The unit of momentum is kilogram meter per second (kg·m/s).

Front

How does mass affect momentum?

Back

Greater mass results in greater momentum if velocity remains constant.

Front

How does velocity affect momentum?

Back

Greater velocity results in greater momentum if mass remains constant.

Front

What is an elastic collision?

Back

An elastic collision is one in which both momentum and kinetic energy are conserved.

Front

What is an inelastic collision?

Back

An inelastic collision is one in which momentum is conserved, but kinetic energy is not.

Front

What is the principle of conservation of momentum?

Back

The principle states that the total momentum of a closed system remains constant if no external forces act on it.