Momentum (Cambridge (CIE) IGCSE Physics)

False.

Momentum is a vector quantity as it has both magnitude and direction.

Momentum is the product of an object's mass and velocity. It is a vector quantity, denoted by the symbol , and measured in kilogram meters per second (kg m/s).

False.

An object at rest has zero velocity, so zero momentum.

The equation of momentum is

Where:

• = momentum, measured in kilogram metres per second (kg m/s)

• = mass, measured in kilograms (kg)

• = velocity, measured in metres per second (m/s)

Momentum keeps an object moving in the same direction, making it resistant to changes in direction, especially for objects with large momentum.

True.

Momentum can be either positive or negative because it is a vector quantity.

The three conditions under which the momentum of an object will change are:

• if the object accelerates or decelerates

• if the object changes direction

• if the object's mass changes

The principle of conservation of momentum states that in a closed system, the total momentum before an event equals the total momentum after the event.

False.

The conservation of momentum applies to systems of objects, which can include one or multiple objects, as long as the system is closed.

A closed system in the context of momentum refers to a system in which the total momentum remains constant, and no external forces are acting on the system.