What is the speed of the fighter ship relative to earth

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A huge space cruiser passes earth at speed c/2. It launches a small fighter ship away from earth (thank goodness) at speed c/2 relative to the cruiser. The fighter then launches a tiny probe, again away from earth, at speed c/2 relative to the fighter.

a) What is the speed of the fighter ship relative to earth?

b) What is the speed of the probe relative to earth?

Reference no: EM13517769

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