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5 December, 22:04

Question 10

Contact forces are forces acting upon two objects in contact. Which of the following does NOT represent a contact force?

A. Pushing an object on the floor.

B. Dropping a marble from the roof

C. Kicking a soccer ball across a field

D. The weight of a pen on a table

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Answers (1)
  1. 5 December, 22:25
    0
    B. Dropping a marble from the roof
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