- #1
haroldham
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Homework Statement
A 4.2 kg object, initially at rest, "explodes" into 3 objects of equal mass. Two of these are determined to have velocities of equal magnitudes (5.0 m/s) with directions that differ by 90 degrees. How much kinetic energy was released in the explosion? (that is what is the energy of the three object systems after the explosions)
Homework Equations
To be honest, my teacher did not cover this in class so I'm naked in the dark on this one.
The Attempt at a Solution
Since they are at 90 degrees to each other, one would be 5 j m/s and the other would be 5 i m/s. I am not sure where to go from there or where the third factors in.