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Question
A spacecraft of mass M explodes into two parts when its velocity is V. After the explosion, one part of mass m is left stationary. What is the velocity of the other part?
A spacecraft of mass M explodes into two parts when its velocity is V. After the explosion, one part of mass m is left stationary. What is the velocity of the other part?
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Solution
The correct option is B
Mass of the second part = M – m. If its velocity is v, then we have MV = (M – m) v + m × 0
or v=MV(M−m), which is choice (b).
Mass of the second part = M – m. If its velocity is v, then we have MV = (M – m) v + m × 0
or v=MV(M−m), which is choice (b).
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