Physics Fast Facts

A moving object's __________ is its mass times its velocity. It is in the direction of motion.

• momentum

• impulse

• inelastic collision

• elastic collision

Tags

NGSS.HS-PS2-2

__________ is defined as a force multiplied by the time during which that force acts. This is also known as the change in momentum.

• momentum

• impulse

• inelastic collision

• elastic collision

Tags

NGSS.HS-PS2-2

A __________ is made up of several objects that can be treated as a single thing.

• system

• surroundings

• universe

Tags

NGSS.HS-LS2-6

A __________ is made up of everything other than the system.

• system

• surroundings

• universe

A __________ is the combination of the system and the surroundings.

• system

• surroundings

• universe

Tags

NGSS.HS-PS3-4

Momentum is conserved __________ collisions.

• only in elastic

• only in inelastic

• in all

• never during

Tags

NGSS.HS-PS2-2

Kinetic energy is conserved __________ collisions.

• only in elastic

• only in inelastic

• in all

• never during

True/False: The center of mass of a system of objects obeys Newton's Second Law.

• True

• False

Tags

NGSS.HS-PS2-1

True/False: The impulse-momentum theorem is only valid when objects collide.

• True

• False

Tags

NGSS.HS-PS2-3

The only time when momentum of a system is NOT conserved is when a force is exerted by an object that's __________ ,

• not in the system

• in the system

• moving

• not moving

Tags

NGSS.HS-PS2-2