momentum

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

Determine the momentum of 1000-kg car moving northward at 20 m/s......... 

• 20000 N
• 20000 Joules
• 20000 Kg * m/s
• 20000 kg * m/s north

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.

While playing pool, Emma notices that the pool balls bounce apart.  What type of collision is this?

• Elastic
• Inelastic
• Explosive
• Force

When the speed of an object is doubled, its momentum

• remains unchanged in accord with the conservation of momentum.
• doubles
• quadruples
• decreases

In this type of collision, objects tend to "stick" together.

• elastic
• inelastic 
• They "stick" together in both types of collisions

A 3,000 kg truck moving at +10 m/s hits a 1,000 kg parked car which moves off at +15 m/s after the collision. What is the velocity of the truck after the collision?

• 10 m/s

• 0 m/s

• 5 m/s

• 2 m/s

When two objects interact in an isolated system,

• the momentum of each object is conserved

• the total momentum of the system is zero

• the total momentum is conserved only if the objects move in

  opposite directions

• the total momentum is always conserved

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

When two ice skaters initially at rest push off one another, their final momenta are

• equal in magnitude and direction.

• equal in magnitude and opposite in direction

• in the same direction but of different magnitudes

• in opposite directions and possibly of different magnitudes