Momentum General

Momentum

Newton's Second Law

Multiple Choice

Which friction deals with an object that does NOT move?

• Fluid

• Sliding

• Static

• Rolling

Multiple Choice

All friction works in the opposite direction of the object's motion.

• True

• False

Multiple Choice

A box falling off a shelf will be impacted by this friction.

• Fluid

• Rolling

• Static

• Sliding

Multiple Choice

Friction is a force that opposed motion of objects that touch.

• True

• False

Momentum

• The product of an object’s mass and its velocity

• An object has a large momentum if the product of its mass and velocity is large

• An object with large momentum is harder to stop than an object with small momentum

• Momentum for any object at rest is zero

Momentum

• Momentum= mass x velocity

• P= m x v

• Momentum (P) = kg * m/s

• Mass (m) = kg

• Velocity (V) = m/s

Momentum Equations

• P = m X v

• V = P/m

• M= P/v

• 
  

• 
  

Multiple Choice

What letter represents momentum?

• P

• M

• V

• g

Multiple Choice

Momentum is the product of an object's mass and acceleration.

• True

• False

Multiple Choice

Momentum for an object at rest is 0.

• True

• False

Law of Conservation of Momentum:

• If no net force acts on a system, then the total momentum of the system does not change

• In a closed system, the loss of momentum of one object equals the gain in momentum of another object – momentum is conserved

• Closed system = objects and forces cannot enter or leave a system

Your Homework

• Momentum practice problems on Canvas.

• There are 11 questions.

• You will need to solve for velocity or mass.

• We will go over these on Monday.