No more homework!

Nixy

Nixy

Elimi-nistrator
Staff member
Professur said:
She has no desire for continuing education. Probably due to the fact that her mother has a degree and is a lunch monitor, her uncle has a degree, and is a manager at a porn film shop, her aunt has 2 degrees ... and is an inventory clerk .... and her father with none is a top computer tech.
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If I am remembering the details of the uncle correctly the fact he works in a porn shop is a little funny.
 
nalani

nalani

Well-Known Member
Professur said:
My oldest (and middle to a lesser extent) actually make their own homework, since the school doesn't provide enough to satisfy them. Naturally, it's math and science they crave. Language studies can go hang.
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I think that's awesome, Prof ... my kids are always busy 'catching up' because they have hectic schedules but they have tons of homework. I think for some kids piling on too much homework works in reverse - makes them not want to do any of it because there's just so much. I swear if it wasn't for sports there'd be very little motivation to get their work done.
 
tonksy

tonksy

New Member
nalani said:
I think that's awesome, Prof ... my kids are always busy 'catching up' because they have hectic schedules but they have tons of homework. I think for some kids piling on too much homework works in reverse - makes them not want to do any of it because there's just so much. I swear if it wasn't for sports there'd be very little motivation to get their work done.
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Sounds like my house. Marlowe has math and spelling homework M-Th and reading homework everyday. She needs to do her math and spelling before leaving for Choi Kwang Do 3 days a week...and then there's Brownies.
The reading is cumulative and due at the end of the month so there are many days we skip it and double up the next day.
Malory has much less homework...until next year.
 
GrandCaravanSE

GrandCaravanSE

Active Member
Suppose an arrow were shot off a building 200 M high at a speed of 50 m/s @ 40*. how far form the building would the arrow land?
 
Altron

Altron

Well-Known Member
GrandCaravanSE said:
Suppose an arrow were shot off a building 200 M high at a speed of 50 m/s @ 40*. how far form the building would the arrow land?
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the arrow reaches its apex at a time of 3.3 seconds after launch, at which point it is 125 meters horizontally away from the building, and 252 meters off the ground. at 10.4 seconds, the arrow hits the ground 395 meters from the building at 79.6 m/s, at an angle of 62 degrees.
 
Altron

Altron

Well-Known Member
its for real. obviously it's ignoring drag, since you didn't provide me with a drag coefficient. i imagine an arrow doesn't have much drag though.
 
Altron

Altron

Well-Known Member
A block with mass M, moving horizontally at 5 m/s, collides elastically with a block of mass 3M that is initially hanging at rest from the ceiling on the end of a 50cm wire. find the maximum angle through which the block swings after it is hit.
 
GrandCaravanSE

GrandCaravanSE

Active Member
Altron said:
its for real. obviously it's ignoring drag, since you didn't provide me with a drag coefficient. i imagine an arrow doesn't have much drag though.
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i just did the problem my self and you are right, i was off a little i am sure due to rounding. well i though if i added drag nobody would get it.
 
GrandCaravanSE

GrandCaravanSE

Active Member
Altron said:
A block with mass M, moving horizontally at 5 m/s, collides elastically with a block of mass 3M that is initially hanging at rest from the ceiling on the end of a 50cm wire. find the maximum angle through which the block swings after it is hit.
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damn i havent done one of those in along time.
 
Altron

Altron

Well-Known Member
that answer was 68 degrees.

how about this one? you have a lunar lander. one third of its mass is fuel. the exhaust velocity is 1500m/s. how long can it hover above the earths surface before running out of fuel?

hint - you need to use a first order differential equation
 
A.B.Normal

A.B.Normal

New Member
Altron said:
that answer was 68 degrees.

how about this one? you have a lunar lander. one third of its mass is fuel. the exhaust velocity is 1500m/s. how long can it hover above the earths surface before running out of fuel?

hint - you need to use a first order differential equation
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If its a lunar lander it won't be hovering above Earth at all. :glasses3:
 
Professur

Professur

Well-Known Member
dude, if you're gonna teleport the fucking thing across a couple of hundred thousand miles into different gravity wells, it's gonna take one helluva good pilot to hover at all, let alone for 7 minutes.
 
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