7Physics: Collisions and Momentum

What is momentum?

• An object's mass times its velocity

• The energy stored in an object

• An object's tendency to remain in motion

• The force exerted by an object

Tags

NGSS.HS-PS2-2

What is impulse in the context of physics?

• The net force on an object over time

• The energy transferred during a collision

• The force exerted by an object

• The resistance of an object to change in motion

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

In which type of collision is kinetic energy conserved?

• None of the above

• Perfectly inelastic collision

• Inelastic collision

• Elastic collision

What is the main factor that affects collisions between objects?

• Momentum of the objects

• Size of the objects

• Shape of the objects

• Weight of the objects

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

What is the third law of motion according to Newton?

• The force exerted by an object

• An object’s mass times its velocity

• The net force on an object is equal to its mass times its acceleration

• Every action has an equal and opposite reaction

What is the term used to describe the average position of all the mass in a system?

• Center of gravity

• Center of mass

• Center of force

• Center of motion

What happens in a perfectly inelastic collision?

• Objects change direction after the collision

• Objects lose all of their kinetic energy

• Objects stick together after the collision

• Objects bounce off each other after the collision

Tags

NGSS.HS-PS2-2

What is the main quality to take into account when objects collide?

• Weight and size

• Speed and direction

• Shape and color

• Momentum and impulse

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

What is the derivative of mass-times-velocity with respect to time?

• Momentum

• Acceleration

• Impulse

• Net force

Tags

NGSS.HS-PS2-2

What is the net force on an object according to Newton's second law?

• Mass times velocity

• Change in mass-times-velocity over time

• Quantity of motion

• Mass times acceleration

Tags

NGSS.HS-PS2-1