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A particpant who teaches 9th grade science has questioned the correct answers
to the pretest for item numbers: 2, 8, and 9.

He says item # 2.'s answer should be d. - that none of the above are correct;
# 8.'s answer should be a. - that the windshield exerts a greater force on
the bug than the bug exerts on the windshield, and that # 9.'s answer should
be that the small car exerts a greater force on the truck than the truck
exerts on the car.

Please explain the correct answer choices.

Thanks, Mary Tweedy

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