Momentum Concepts
Calculating Momentum
Momentum Conservation
Impulse AKA Jimpulse
Collisions & Wildcard
100
Momentum = Mass x _________
velocity
100
What is the momentum of a 60-kg halfback moving eastward at 9 m/s.
540 kg•m/s, east
100
The symbol/letter for momentum is _.
p
100
________ is a change in momentum.
Impulse
100
Inelastic Collision:
Woody (mass 2 kg) and Buzz (mass 3 kg) crash into each other. Woody slides at 5 m/s and collides with Buzz, who is stationary. They stick together.
What is their combined final velocity?
Equation: m1v1i + m2v2i = (m1+m2)vf
2 m/s
200
What is the momentum of a 10 kg cute dog moving westward at 5 m/s?
50 kg*m/s, west
200
Momentum of a 1000-kg car moving northward at 20 m/s.
20 000 kg•m/s, north
200
True or False?
For any collision (occurring in an isolated system), momentum is conserved.
True!
200
The shorter equation for Jimpulse, J =
J = F*t
200
Princess Photon drives a bumper car at 6 m/s, and Duke Electron is at rest. They collide elastically. No one knows their mass!
Question:
What are their final velocities? (Hint: think about pool)
Princess P ends at 0 m/s and Duke E moves off at the original 6 m/s.
300
Momentum is a ______________ quantity with both magnitude and direction.
vector
300
A skateboarder named Tony has a momentum of 600 kg*m/s. His mass is 60 kg. What is his speed/velocity?
Equation: rearrange p = mv
v = 10 m/s
300
What collision is it when two separate objects collide and become one single object? Hint: one object is IN the other object
An INelastic collision!
300
The delta or triangle in a mathematical equation means this.
Change!
300
A 4 kg Roman Candle (firework) is at rest. It explodes into two fragments: one is 1 kg flying at -6 m/s, and the other is 3 kg at some velocity.
What is the velocity of the 3 kg piece?
Equation: Mvi = m1v1f + m2v2f
v = 2 m/s
400
The metric unit for momentum is ____________
kg x m/s
400
A car possesses 20,000 units of momentum. What would be the car's new momentum if its mass was doubled (by adding more passengers),
40,000 units of momentum
400
What kind of collision is it when one object separates into two pieces?
An explosion!
400
The longer impulse equation, J =
J = mvf - mvi
400
The actor who played the male lead in How To Lose A Guy In 10 Days and in Interstellar.
Matthew McConaughey
500
True/False
An object's momentum is indirectly proportional to an object's velocity
false
500
A 60 kg quarterback is running at 3 m/s down the field.
A 90 kg halfback is running at 2 m/s down the field.
Which player has the most momentum?
neither, both players have the same momentum.
500
What collision is it when two separate objects crash into each other, but bounce and stay two separate objects?
An elastic collision!
500
What is the impulse of a baseball that is hit with a force of 500 Newtons and touching the bat for 0.02 seconds?
10 N*s
500
Which NFL kicker holds the record for the longest field goal in an NFL game, and how long was it?
Justin Tucker of the Baltimore Ravens set the record in 2021 with a successful 66-yard field goal.