Question 1

In a totally elastic collision of two billiard balls (2-dimensional elastic collision) ,which of the following quantities is not conserved?

Accepted Answer

A)  total kinetic energy
B)  total momentum
C)  x-component of the total momentum
D)  total velocity
E)  total mass

Question 2

Two billiard balls undergo a glancing collision.Before the collision the first ball was travelling east at 2.6 m/s and the second ball was travelling west at 1.2 m/s.After the collision the second ball is deflected by +90 degrees travelling north at 1.47 m/s.Working in a coordinate system where +x direction is east and +y direction is north,what is the direction of the first ball after the collision?

Accepted Answer

A)  46.4º south of east
B)  43.6º south of east
C)  46.4º south of west
D)  43.6º south of west

Exam 7: Momentum and Collisions

In a totally elastic collision of two billiard balls (2-dimensional elastic collision) ,which of the following quantities is not conserved?

Correct Answer
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Correct Answer
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Exam 7: Momentum and Collisions

In a totally elastic collision of two billiard balls (2-dimensional elastic collision) ,which of the following quantities is not conserved?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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