Asteroid Collision: Calculating Impact Speed

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SUMMARY

The discussion focuses on calculating the impact speed of an asteroid traveling at 12 km/s from a distance of 10r from Earth. The gravitational potential energy formula, U = -Gm[E]m / r, is referenced but not fully utilized due to insufficient information provided by the original poster (OP). Participants emphasize the necessity for the OP to demonstrate effort by including specific values for constants such as G (gravitational constant) and m[E] (mass of Earth) to facilitate a proper calculation. Without these details, the impact speed cannot be accurately determined.

PREREQUISITES
  • Understanding of gravitational potential energy and its formula
  • Familiarity with the concepts of velocity and impact speed
  • Basic knowledge of gravitational constants and their values
  • Ability to apply physics principles to real-world scenarios
NEXT STEPS
  • Research the gravitational constant G and its significance in calculations
  • Learn how to apply the gravitational potential energy formula in impact scenarios
  • Explore the concept of escape velocity and its relation to impact speed
  • Study real-world examples of asteroid impacts and their calculations
USEFUL FOR

Astronomy enthusiasts, physics students, and professionals involved in planetary defense or impact analysis will benefit from this discussion.

Willis2833
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1. An asteroid is 10r away from the earth, and traveling at a speed of 12 km/s. What is the impact speed of the asteroid when it hits the earth?2. Gravitation problem: U = -Gm[E]m / r ...I think3. I've been looking in my book and online and cannot figure it out, please help!
 
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Willis2833, we'd really like to help, but the Rules at PF state the OP must show some effort at solving the problem posted. Unfortunately, 'I cannot figure it out,' isn't good enough. I mean, you should write down some numbers at least, or the value of the constants like r or G, or Me.
 
Surely there is not enough information to answer the question.

If the asteroid's speed is away from Earth, then the answer is: "not applicable".
 

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