Momentum
What's the formula for momentum?
P=mV
What are the units for Impulse
N*s or kg*m/s
What type of collision is it when two objects stick together? What is an example?
Inelastic Collision. Football tackle, wrestling, airbags...
What is the velocity of a 5kg object whose momentum is -15kg m/s?
-3 m/s
What are at least 3 ingredients in stroganoff sauce?
Mushrooms, cream, garlic, onion, butter, Worcester.
How are INERTIA and MOMENTUM related?
MASS: The more mass an object has the more inertia (resistance to change in motion) an object will have - SIMILARLY the more mass an object will have the more momentum (harder to stop) an object will have!
What is the definition of IMPULSE (NOT THE FORMULA)
The change in momentum.
What is a type of collision when objects bounce off of each other? What is an example?
Elastic Collision. Bowling, baseball + bat, Newton's Cradle
A 2kg soccer ball is kicked with a force of 8N. What is the final velocity if the soccer ball if the impact time is 0.5 seconds?
F*t=mvf-mvi
(8)(.5) = 2(x) - 2(0)
Who won the world cup in 2018?
France
What is the unit for momentum and how does it make sense?
Kg*m/s
Explain the egg and the sheet demonstration done in class.
The egg does not break when it hits the sheet as the force is felt less because the impact time is extended.
What is the law of conservation of momentum in math terms?
P initial = P final
Charlie is playing T-ball. He swings at a 0.144 kg ball that is at rest and hits it with a force of 182N, which is in contact with the ball for 0.009s. How fast will the ball be traveling after it is hit?
F*t = m*v
182N * 0.009s = 0.144-kg * v
v = 11.38 m/s
What is Super Mario's height ?
Five foot One.
Luigi is five foot nine.
Which one of Newton's Laws is related to momentum ? How come?
Newtons 1st Law!
THINKING ABOUT IMPULSE: How can Karate masters chop a stack of bricks in half?
A short impact time creates a LARGE force
I = Ft
What does it mean to transfer momentum? What is an example?
Momentum is conserved within a system - therefore momentum is TRANSFERRED from one object to another.
Example: the marble lab - when I dropped one marble one traveled out
A force of 6.0 newtons changes the momentum of a moving object from 0 to 3.0 kg m/s. How
long did the force act on the mass?
I = FT (change in momentum) = (force)(time)
3 = 6x
.5 seconds
What is spiderman's middle name?
Benjamin
What is the formula for impulse equals the change in momentum?
mvf+mfi = F * T
How do you increase an object momentum?
Increase the force on the object.
Two objects experience an inelastic collision. What happens to the mass and the velocity knowing that momentum will be conserved?
The velocity will decrease and the mass will increase as the objects stick together.
A 2,600-kg car going 30 m/s rear ends a 1,100-kg car going 15 m/s on ice in the same direction. The two cars stick together. What is the velocity of the cars after the collision?
25.54 m/s
How fast does Lockheed S-22 Rapter go? In mph or Machs.
Mach 2
1,800 miles PER HOUR
35 miles a minute