1. The problem statement, all variables and given/known data(adsbygoogle = window.adsbygoogle || []).push({});

Two asteroids of 1.0x107kg and 6.0x107kg respectively, are initially at rest in interstellar space separated by a large distance. Thier mutual gravitational attraction then causes then to fall toward each other on a straight line. Assume the asteroids are spheres of radius 130m and 420m respectively.

A) what is the velocity of each asteroid before they hit?

130m, v=? 420m asteroid, v=

What is the kinetic energy of each?

What is the total kinetic energy?

B) The collision is totally inelastic. What is the velocity of the joined asteroids after they hit?

2. Relevant equations

K=1/2mv2

vf = (m1v1 + m2v2)/(m1 + m2)

3. The attempt at a solution

I have absolutely no idea about how to get the initial velocities, but I know where to go from there.]

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# Two Asteroids Colliding- Find the Initial Velocities

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