Unit 3 Test: Momentum

In which of the following is momentum conserved?

• Elastic Collisions

• Inelastic Collisions

• Explosions

• All of the above

• Need more information

Tags

NGSS.HS-PS2-2

A heavy truck and a small car travel at the same speed. The truck has more momentum because:

• the truck’s mass is greater

• the truck’s speed is greater

• the truck’s wheels are wider apart

• All of the above

• Need more information

Tags

NGSS.HS-PS2-2

A heavy object and a light object have the same momentum. Which one has a greater speed?

• The light object is faster

• The heavy object is faster

• They both have the same speed (not zero)

• The heavy object is moving and the lighter object is not moving

• The lighter object is moving and the heavy object is not moving

Tags

NGSS.HS-PS2-2

The primary reason cars have safety features (seatbelt, air bags) is to:

• Reduce the change in momentum during a collision

• Reduce the amount of force of the collision

• Reduce the impulse of the collision

• Increase the time of the collision

• All of the above

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

A change in momentum can result from the object experiencing:

• a force

• an acceleration

• an impulse

• a change in direction

• All of the above

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

The units of momentum are:

• N

• kg

• N kg

• kg m/s

• m/s

Tags

NGSS.HS-PS2-2

When playing billiards, the billiard balls bounce off of each other after crashing. This is an example of:

• Inelastic Collision

• Elastic Collision

• Explosion

• Decomposition

• All of the above

Tags

NGSS.HS-PS2-2

In a chemical reaction between sodium ions (Na+) and chlorine ions (Cl-), the ions ionically bond together to form salt (NaCl). This is an example of:

• Inelastic Collision

• Elastic Collision

• Explosion

• Separation

• Need more information

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

NGSS.HS-PS1-3

A student is standing on a skateboard. When the student jumps forward off of the skateboard, the skateboard moves backwards in the opposite direction. This is an example of:

• Inelastic Collision

• Elastic Collision

• Explosion

• Separation

• Need more information

Tags

NGSS.HS-PS2-2

A small rocket at rest has a mass of 5 kg. When launched, it experiences an upward net force for 170 seconds. What is the final velocity of the rocket? (Ignore air resistance)

• 5950 m/s

• 850 m/s

• 1190 m/s

• 34 m/s

• 744 m/s

Tags

NGSS.HS-PS2-1