(17%) Problem 4: When we study the interaction of a baseball with a bat, we freq
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(17%) Problem 4: When we study the interaction of a baseball with a bat, we frequently ignore the action of gravity on the ball. ? Since gravity is an external force to the ball at system, t would seem that momentum is not actually conserved during this interaction. Which of the following statements are correct about this situation (select all that apply)? Grade Summary Deductions 0% Potential Then the total momentum after the collision is approximately the same as it was before the collision. 100% External forces cannot change the momentum of an system. The internal forces are much greater than the external forces. Defining systems is arbitrary and we have isolated gravity from this case. The internal forces cancel out the external forces of gravity Submissions Attempts remaining: 1 ( 1 1 % per attempt) detailed view Submit Hint Hints: 0% deduction per hint. Hints remaining: 1 Feedback: 0% deduction per feedback. All content © 2018 Expert TA, LucExplanation / Answer
Statement 1 and 3 are correct.
The internal forces are much greater than the external forces
the total momentum after the collision is approximately the same as it was before the collision because the gravitational forces is much much less than the internal forces
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