Tag Archives: Science

At what horizontal distance between the target and the rocket should you launch?

Posted on May 15, 2012 by admin| 3 Comments

As a science fair project, you want to launch an 850 g model rocket straight up and hit a horizontally moving target as it passes 31 m above the launch point. The rocket engine provides a constant thrust of 15.0 N. The target is approaching at a speed of 15 m/s. At what horizontal distance between the target and the rocket should you launch?

I was trying to use some of the kinematic equations to figure this one out, but I’m always missing some part to the problem or at least that’s what I’m thinking. Got any ideas?

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Posted in Model Rockets

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ROCKEt HeLp?

Posted on May 10, 2012 by admin| 2 Comments

I’m fourteen and i’m really interested in rockets. I have been launching off the model rockets you can buy from hobby stores since i was 8. For a book report, i read the book October Sky and saw the movie. Now, i’m really interested in making my own rocket. Does anyone have any links or good book i can read to get to know enough about them to make a simple rocket? I’m really good at math and i’m a real good at science too. If you don’t have any links or any books that would really help, i can handle the equations, even if they’re for the nozzle. I was hoping i could make one out of metal…not just cardboard. Thanks in advance foryour help!

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Posted in Model Rockets

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Does anyone know anything about rockets?

Posted on May 9, 2012 by admin| 3 Comments

I’m fourteen and i’m really interested in rockets. I have been launching off the model rockets you can buy from hobby stores since i was 8. For a book report, i read the book October Sky and saw the movie. Now, i’m really interested in making my own rocket. Does anyone have any links or good book i can read to get to know enough about them to make a simple rocket? I’m really good at math and i’m a real good at science too. If you don’t have any links or any books that would really help, i can handle the equations, even if they’re for the nozzle. I was hoping i could make one out of metal…not just cardboard. Thanks in advance foryour help!

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Posted in Model Rockets

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I stink at science, can u help me with these problems i have on webassign.?

Posted on May 7, 2012 by admin| 1 Comment

An ice sled powered by a rocket engine starts from rest on a large frozen lake and accelerates at +13.0 m/s2. At tl = 2.8 s the rocket engine is shut down and the sled moves with constant velocity v. At the 3800 m mark, the sled begins to accelerate at -7 m/s2. Find v to help answer the following questions.
(a) What is the final position of the sled when it comes to rest?
______m
(b) How long after it begins decelerating does it take for the sled to come to rest?
_______ s ————Next question———–

A model rocket is launched straight upward with an initial speed of 75.0 m/s. It accelerates with a constant upward acceleration of 2.0 m/s2 until its engines stop at an altitude of 150 m.
(a) What is the maximum height reached by the rocket?
_____m
(b) How long into the flight does the rocket reach maximum height?
______s
(c) How long is the rocket in the air?
______ s

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Posted in Model Rockets

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Any Ideas for a Pre-K Science Project?

Posted on April 19, 2012 by admin| 5 Comments

My 5 yr old daughter needs a science project. And it needs to be something that a 5 year old can do, because any parent involvment is means for Ineligibility to participate.

This is kinda tough.. so i need a very simple project that my 5 year old can do (of course im going to help her). She can read and write very simple words (man, snaps, hand, ect ). She can count to 100.
The project can NOT include:
- Live animals, dissection
- displays, models or informational reports such as rockets, volcanoes, tornadoes, solar system models, dinosaurs. Project must be an experiment following scientific method.
- Flames or inflammatory items, dry ice, or dangerous chemicals. Any items that may be dangerous to students.

Extra Info of what needs to be involved in the project:
-title
-question
-hypnothesis
-materials
-procedures
-observations
-outcome
-conclusion
-apparatus

i need a simple project for my 5 year olds Pre-K class, with hardly any parent involvement. HELP!!!

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Posted in Model Rockets

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what is NSTSC ?

Posted on April 19, 2012 by admin| 2 Comments

I have 2 sons studying in 3rd and 7th grades. We are staying in saudi. They ahve been asked by their schools to enroll for an National science talent search examination, would like to know what this is? Is is useful for them and what would the model of the examination. Would also want to know if there are any sites which give any online training or is there any place from where i could have the questions downloaded. What subjects would they have to prepare for ? Please help

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Posted in Model Trains

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Car model science experiment… please give us your ideas?

Posted on April 11, 2012 by admin| 1 Comment

My son is doing a science experiment consisting of building a self propelled car model (can be a rocket or some kind of other vehicle). The car model must travel 1.5 meters and stay within a couple of feet (it should not get off a straight course by much). His idea was to put wheels on a diet coke bottle and drop a couple of mentos in it to propel it. Again, it has to be self propelled (no running it down a ramp or anything).

Any ideas would be greatly appreciated. I know there are a lot of homework questions out there just trying to get out of their own homework, but this isn’t one of them. The work is in the experiment this time.

He is in 9th grade Physical Science, by the way. Thanks in advance for any insight!

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