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A big block stone with mass M explodes and splits in two pieces with mass 0.40M...

A big block stone with mass M explodes and splits in two pieces with mass 0.40M and 0.60M.

Which allegation is true?

A) They move in opposite direction with the same speed.

B) They move in opposite direction with the kinetic energy.

C) They move in opposite direction with the same momentum.

D) The biggest stoneblock gets a speed 1.5 times bigger than the small one.

Explain your answer!

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