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A spaceship (with mass m and moving at speed v relative to an observer) separates into two pieces due to internal forces, one of them 3.8 times as massive as the other. After the separation the less massive piece is at rest as seen by the observer (in the observer's frame of reference). How does the kinetic energy of the system change as a result of the separation, as seen in the observer's frame of reference? Express your answer as a ratio of the change in kinetic energy to the initial kinetic energy: ΔKKi, where Ki is the initial kinetic energy: ΔKi Ki =

A spaceship (with mass m and moving at speed v relative to an observer) separates into two pieces due to internal forces, one of them 3.8 times as massive as the other. After the separation the less massive piece is at rest as seen by the observer (in the observer's frame of reference). How does the kinetic energy of the system change as a result of the separation, as seen in the observer's frame of reference? Express your answer as a ratio of the change in kinetic energy to the initial kinetic energy: ΔKKi, where Ki is the initial kinetic energy: ΔKi Ki =

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A spaceship (with mass m and moving at speed v relative to an observer) separates into two pieces due to internal forces, one of them 3.8 times as massive as the other. After the separation the less massive piece is at rest as seen by the observer (in the observer's frame of reference).
How does the kinetic energy of the system change as a result of the separation, as seen in the observer's frame of reference? Express your answer as a ratio of the change in kinetic energy to the initial kinetic energy: Δ K K i , where K i is the initial kinetic energy:
Δ K i K i =
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