Silly rocket question

by Bella

The question about the rocket:

6.) A rocket engine that takes off from earth burns 10,000 pounds of fuel in 15 minutes, and is able to lift 20,000 pounds total for that time period (including the rocket fuel itself). If a payload that weighs 20,000 pounds is needed to be transported for one hour, and unused rocket engines are dropped in stages after their fuel has been exhausted, how many rocket engines must be used to transport the payload for that time period?

Is so confusing and does not make any logical sense!!!

Fix this question!!!

Thank you

Comments for Silly rocket question

Average Rating starstarstarstar

Click here to add your own comments

by: Anonymous

I figured it at 4 engines 1 engine is good for 15 minutes. 15 min. x 4 = 60 min/1 hour.

Rockets, shrockets
by: Anonymous

I think you're all off your rockets !!

Still doesn't make sense
by: Anonymous

How much does each rocket engine weigh? Are we to assume the rocket engines are weightless -- that is the only way to solve the problem and is not very realistic.

Now it makes sense
by: Bella

Thanks for clearing that up. I was too confused about all the rockets etc.

by: iStryker

Stage 4:
20,000lb = 0,000 thrust (payload)
10,000lb = 20,000 thrust (rocket 1)
10,000lb = 20,000 thrust (rocket 2)
40,000lb = 40,000 of thrust

Stage 3:
40,000lb = 0,000 thrust (payload + 2 rockets)
10,000lb = 20,000 thrust (rocket 3)
10,000lb = 20,000 thrust (rocket 4)
10,000lb = 20,000 thrust (rocket 5)
10,000lb = 20,000 thrust (rocket 6)
80,000 = 80,000 of thrust

Stage 2:
80,000 = 0,000 of thrust (payload + 6 rockets)
8x(10,000lb) = 160,000 of thrust (8 more rockets)
160,000lb = 160,000 of thrust

Stage 1:
160,000 = 0,000 of thrust (payload + 14 rockets)
16x(10,000) = 320,000 of thrust (16 more rockets)
320,000lb = 320,000 of thrust
30 rockets

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to views.

Recent Articles

  1. Explore Personality Disorder Tests

    Mar 12, 18 03:14 PM

    Can personality disorder tests help you to control the beast in you? A little journey beyond job aptitude tests.

    Read More

  2. Hot Products

    Mar 10, 18 01:15 AM

    These Hot Products can help you in advancement of your career

    Read More

  3. 8 Tips for Your Aptitude Test Preparation

    Mar 05, 18 04:15 PM

    You must avoid encountering your aptitude test without preparation. These 8 tips for your aptitude test preparation can help you for your psychological session.

    Read More