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(III) Billiard balls A and B, of equal mass, move at right
Chapter 1, Problem 44P(choose chapter or problem)
(III) Two billiard balls of equal mass move at right angles and meet at the origin of an coordinate system. Ball A is moving upward along the
axis at \(2.0 \mathrm{~m} / \mathrm{s}\), and ball
is moving to the right along the
axis with speed \(3.7 \mathrm{~m} / \mathrm{s}\). After the collision, assumed elastic, ball B is moving along the positive
axis (Fig.
). What is the final direction of ball
and what are their two speeds?
FIGURE 7-37
Problem44. (BAll A after the collision is not shown.)
Equation Transcription:
Text Transcription:
2.0 m/s
3.7 m/s
Questions & Answers
QUESTION:
(III) Two billiard balls of equal mass move at right angles and meet at the origin of an coordinate system. Ball A is moving upward along the
axis at \(2.0 \mathrm{~m} / \mathrm{s}\), and ball
is moving to the right along the
axis with speed \(3.7 \mathrm{~m} / \mathrm{s}\). After the collision, assumed elastic, ball B is moving along the positive
axis (Fig.
). What is the final direction of ball
and what are their two speeds?
FIGURE 7-37
Problem44. (BAll A after the collision is not shown.)
Equation Transcription:
Text Transcription:
2.0 m/s
3.7 m/s
ANSWER:
Whenever two bodies collide, their speed and direction of motion changes. In this problem, we have to determine speed of ball A and ball B, and the final direction of ball A after collision.
Step 1 of 5
Concept:
Law of conservation of linear momentum: When no external force acts on the system, then the final momentum of the system is equal to their initial momentum.
Law of conservation of Energy: Energy can neither be created nor be destroyed. It can only be converted from one form into other. The total amount of energy in an isolated system remains constant.