Conservation of Momentum in Collisions

The law of conservation of momentum states that, 

• p before is less than p after
• p before is the same as p after
• p before is more than p after

Tags

NGSS.HS-PS2-2

A 0.250 kg cart moving at 0.400 m/s has how much momentum?

• 0.1 kg-m/s
• 1 kg-m/s
• 10 kg-m/s
• 100 kg-m/s

Tags

NGSS.HS-PS2-2

If 2 objects collide and stick together, what will happen to their velocities?

• velocities will increase
• velocities will decrease
• velocities will stay the same
• none of the above

Tags

NGSS.HS-PS2-2

A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?

• 0 kgm/s
• 30 kgm/s
• 50 kgm/s
• 10 kgm/s

Tags

NGSS.HS-PS2-2

Momentum is a ____________________ quantity

• science
• scalar
• vector
• energy

Tags

NGSS.HS-PS2-2

Which object listed below has the greatest momentum?

• A 0.05 kg object rolling at 0.2 m/s.
• A 0.15 kg object rolling at 2 m/s.
• A 0.15 kg object rolling at 1 m/s
• A 0.4 kg object rolling at 2 m/s.

Tags

NGSS.HS-PS2-2

Rahim observed a collision in lab where the kinetic energy after the collision was equal to the kinetic energy before the collision.  This type of collision is

• Completely Inelastic
• Elastic
• Inelastic

Shaniqua noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did she observe?

• Elastic
• Inelastic
• Completely inelastic

Sally runs and jumps off of a diving board and lands on a tube (she stays in the tube).  The collision between Sally and the tube is

• Elastic
• Inelastic
• Perfectly Inelastic
• Completely absurd

Tags

NGSS.HS-PS2-2

Two objects of the same mass collide with each other.  The second object is at rest and the first is moving at 5 m/s North before the collision.  After the collision, the first mass is at rest and the second mass continues at 5 m/s North. 
The type of collision represented by these two masses is

• Inelastic
• Completely Inelastic
• Elastic

Tags

NGSS.HS-PS2-2