Register to reply

Velocity of an Asteroid

by sklotz
Tags: asteroid, velocity
Share this thread:
sklotz
#1
Jul19-12, 12:09 PM
P: 7
1. The problem statement, all variables and given/known data

An asteroid of mass 2500 kg has a (relativistic) kinetic energy of 1e+20 J. What is the speed of the asteroid?

2. Relevant equations

KE=(mc^2/sqrt(1-v^2/c^2)-mc^2

3. The attempt at a solution

I tried plugging in my values to this equation and got 216480727.3. the answer is in terms of c. Im not sure if im doing something wrong or if im in the wrong units because in all my problems where im given a velocity its always a small value times c such as .9c and I got a large number. There is another problem like this where im solving for the velocity I cant figure out either.
Phys.Org News Partner Science news on Phys.org
Study links polar vortex chills to melting sea ice
Lab unveil new nano-sized synthetic scaffolding technique
Cool calculations for cold atoms: New theory of universal three-body encounters
Chestermiller
#2
Jul19-12, 02:18 PM
Sci Advisor
HW Helper
Thanks
PF Gold
Chestermiller's Avatar
P: 5,264
Quote Quote by sklotz View Post
1. The problem statement, all variables and given/known data

An asteroid of mass 2500 kg has a (relativistic) kinetic energy of 1e+20 J. What is the speed of the asteroid?

2. Relevant equations

KE=(mc^2/sqrt(1-v^2/c^2)-mc^2

3. The attempt at a solution

I tried plugging in my values to this equation and got 216480727.3. the answer is in terms of c. Im not sure if im doing something wrong or if im in the wrong units because in all my problems where im given a velocity its always a small value times c such as .9c and I got a large number. There is another problem like this where im solving for the velocity I cant figure out either.
Show us the mathematical steps you used to arrive at this result. This seems to be an algebra issue.


Register to reply

Related Discussions
A big asteroid. General Physics 0
Escape velocity from asteroid Introductory Physics Homework 4
What makes an asteroid an asteroid and not a comet Astronomy & Astrophysics 8
Final velocity of an asteroid Introductory Physics Homework 9
Finding the velocity and covered distance of Astronaut pushing asteroid Introductory Physics Homework 7