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75. assignment (linear momentum)

Provide all logical steps in the solution(s)/ answer(s).

 A child of mass 28.0 kg is sliding on ice with a velocity of 2.25 m/s in the positive x direction. She is holding a 2.4 kg ball in her hand. She throws the ball straight ahead of her with a velocity of 2.70 m/s (in the + x direction.)

a. What is her velocity immediately after releasing the ball?

(b) What is the velocity of the center of mass of the child and ball immediately after she releases the ball? (If you don't do a calculation you must give a logical explanation for your answer.)

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