Mini-Quiz: Effect of Sun on Escape Velocity from Earth

by Ron Kurtus (revised 5 November 2011)

Take this Mini-Quiz to check your understanding of the lesson material.

1. Why must the rocket engines be shut off for our calculations?

To prevent overheating when achieving escape velocity

To save fuel in case the rocket starts falling

2. Why is the effect of the Sun measured on the far side of Earth?

That is where the Sun's gravitation is pulling against the rocket motion

Rocket blast-offs are always at night

There is no rotation of the Earth in that area

3. What would happen if the rocket did not attain the combined escape velocity?

It really wouldn't matter, since the rocket was moving upward

The rocket would have to reduce its mass

It might escape Earth but then fall into the Sun

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

Encourage others to succeed

Resources and references

Ron Kurtus' Credentials

Websites

Acceleration due to Gravity Calculations - from Western Washington University

Gravitation Resources

Books

Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.

Students and researchers

www.school-for-champions.com/science/
mini-quiz_gravitation_escape_velocity_sun_earth.htm

Where are you now?

School for Champions

Physics topics

Gravity

Let's make the world a better place

Be the best that you can be.

Use your knowledge and skills to help others succeed.

Don't be wasteful; protect our environment.

You CAN influence the world.

The School for Champions helps you become the type of person who can be called a Champion.