Momentum is ________ in ____________.
Everything has I____________, but for something to have momentum it must be ____________.
Momentum means something is going to be________ to ________.
Momentum depends on two things: ________ and ________________.
Elegantly, Momentum = ________ __ ________________.
For instance, if you had a 2.0-kg hamburger moving toward your mouth at 3.5 m/s, the momentum of that hamburger would be _______________.
The universal unit for momentum = ____________.
Momentum is a ___________ quantity, which means it needs both __________________ and __________________ for a full description.
Momentum always points in the same direction as the ________________ vector.
A tractor could have a large momentum if ___________________ _________________________________, but it could also have no momentum if it ________________________________________.
To change momentum, it will take a __________ applied for a certain ________. The combination of these two is called the ______________, which is generally defined as a ____________ in ________________.
F__________ acting for a time can cause __________________________, which are just changes in ________________. When ________________ changes, m______________ changes.
This is why we say that i______________ are changes in ________________.
Elegantly, impulse = __________ x ________ = __ __
If a hailstone with 10. kg m/s of momentum experiences a updraft for 5.0 seconds, causing the hailstone to lose 6 kg m/s of momentum, what is the impulse? How strong was the force?
Airbags, pads, and other soft objects show how impulses could take different forms and do the same job.
Take the example of throwing an egg into a wall or into a sheet.
In both cases, impulse is _____ _______, but ____________ is different. Throwing the egg into the wall will cause it to break because of the high __________ (for a little ________).
If the egg would have been thrown into a sheet, it could stop unbroken because of the lower __________ ( for a bigger ________). Either way, the ______________ is the same because either way the egg experienced the same ____________ in ________________.
______________ are higher when ________________ takes place. This is because there is a large change in v______________, so a corresponding large change in ________________.
This does not mean that i__________ or f________ is higher, because the increased impulse could have come from an extended ________.
Baseball batters, golfers, football kickers follow through to increase the c____________ ________, and in doing so maximize the ball’s ______________, resulting in maximum change in v________________ or maximum a______________________.
Newton’s __________ Law (the Law of F________ P________) says that when two objects touch each other, they exert __________ and ________________ ____________. A little logic says that two objects must also touch each other for the same amount of ________. Consequently, when two objects interact, they experience equal and opposite i______________, for example _____ and __ _____. Between the two objects, there is no change in momentum from b__________ to a________ the interaction.
Elegantly, we say that m______________ is ALWAYS __________________, as long as there is no ______________ __________.
If a train car with a mass of 1000 kg and an initial velocity of 20 m/s collides with an couples together with a identical stationary train car, what will the velocity of the two of them be after the collision?
If a train car with a mass of 1000 kg has 500 kg of coal dumped into it while moving at 20 m/s, what will its final speed be?
These two train car examples are both ___ % ______________, because there is no _______________.
Something that is 100% elastic would bounce up just as ________ as is ____ ______ ______________. We know that this could __________ ____________ however.
If a certain rubber ball was dropped from a height of 8.4 feet and it bounced up to a height of 3.8 feet, what is its elasticity?
A baseball is bunted. The incoming ball is moving at 45 m/s, and has a mass of .25 kg. The bat is moving at 18 m/s, and has a mass of 2.6 kg. After the collision, the bat is moving forward at 3.0 m/s. What is the velocity of the ball after this collision?
Momentum is always conserved, even in two or three ____________________. For example, if a firecracker was falling with a momentum of 10 units downward, when the firecracker exploded, the sum total of all the momentums of all the little pieces would equal _________ __________ too.