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AP® Physics C: Mechanics

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Momentum and Collisions: Three-Object Impossible Results

APPHMC-H2THBF

CMKrehbiel. Created for Albert.io. Copyright 2016. All rights reserved.

The diagram above shows a large object with a mass of $3m$ sliding across a frictionless surface, with an initial speed of $v$. Two smaller objects, each with a mass of $m$, are resting in the path of the larger object. Eventually, the large object will collide with the two smaller objects, sending them sliding away.

Note: No outside horizontal forces will be acting on the three objects during the collision.

Which of the following diagrams depicts a scenario that has impossible values for the velocities of the three objects?

A

CMKrehbiel. Created for Albert.io. Copyright 2016. All rights reserved.

B

CMKrehbiel. Created for Albert.io. Copyright 2016. All rights reserved.

C

Cinsy Krehbiel. Created for Albert.io. Copyright 2016. All rights reserved.

D

CMKrehbiel. Created for Albert.io. Copyright 2016. All rights reserved.

E

Cinsy Krehbiel. Created for Albert.io. Copyright 2016. All rights reserved.