Which of the Following Statements Is the One That Is

question 48

Multiple Choice

Which of the following statements is the one that is true?

• A)Momentum is a scalar quantity.
• B)If the kinetic energy of an object does not change,its momentum can not change.
• C)A spacecraft is traveling in space with its engines off.After a blast from the engines,the center of mass of the system (space craft + exhaust gases)continues with a higher velocity.
• D)The center of mass of an object must always lie within the object.
• E)If two objects of different mass are subject to the same impulse,they will have the same change in momentum.

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