A4.11 A ball sits at rest on a horizontal tabletop. According to Newton's third law, by itself (F, ), the weight of the ball A on B B on A has the same magnitude as A. the downward force of the ball on the table. B. the upward force of the table on the ball. C. the upward force that the ball exerts on planet earth. D. two of A, B, and C. E. all of A, B, and C.

University Physics Volume 1
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Chapter6: Applications Of Newton's Laws
Section: Chapter Questions
Problem 38P: A 20.O-g ball hangs from the roof of a freight car by a string. When the freight car begins to move,...
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Hello can you guys explain why the answer has earth in for question 11 and for 12 explain why it's newton's first law?

A4.11
A ball sits at rest on a horizontal tabletop.
According to Newton's third law, by itself
(F
- F,
), the weight of the ball
A on B
B on A
has the same magnitude as
A. the downward force of the ball on the table.
B. the upward force of the table on the ball.
V C. the upward force that the ball exerts on planet earth.
D. two of A, B, and C.
E. all of A, B, and C.
Transcribed Image Text:A4.11 A ball sits at rest on a horizontal tabletop. According to Newton's third law, by itself (F - F, ), the weight of the ball A on B B on A has the same magnitude as A. the downward force of the ball on the table. B. the upward force of the table on the ball. V C. the upward force that the ball exerts on planet earth. D. two of A, B, and C. E. all of A, B, and C.
A4.12
A ball sits at rest on a horizontal tabletop.
The weight of the ball is equal to the
magnitude of the upward force that the
tabletop exerts on the ball. Why?
V A. This is a consequence of Newton's first law.
B. This is a consequence of Newton's third law.
C. We assume that the table top is perfectly rigid.
D. Two of the above three statements are correct.
E. All of the first three statements are correct.
© 2020 Pearson Education, Inc.
Transcribed Image Text:A4.12 A ball sits at rest on a horizontal tabletop. The weight of the ball is equal to the magnitude of the upward force that the tabletop exerts on the ball. Why? V A. This is a consequence of Newton's first law. B. This is a consequence of Newton's third law. C. We assume that the table top is perfectly rigid. D. Two of the above three statements are correct. E. All of the first three statements are correct. © 2020 Pearson Education, Inc.
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