Marble A has a mass of 0.25 kg and moves 1.0 m/s to the right. It strikes the identical marble, B, which is at rest. Four students predict what will happen after the collision.

Predicted Results after Collision

Marble A

Marble B

Speed

Direction

Speed

Direction

Student A

2.0 m/s

Left

2.0 m/s

Left

Student B

0 m/s

None

1.0 m/s

Right

Student C

1.0 m/s

Left

1.0 m/s

Right

Student D

2.0 m/s

Left

0 m/s

None

Which student's prediction is most likely correct?

Student A

Student B

Student C

Student D

Question

Physics

Dane Kirk

20 November, 18:40

Marble A has a mass of 0.25 kg and moves 1.0 m/s to the right. It strikes the identical marble, B, which is at rest. Four students predict what will happen after the collision.

Predicted Results after Collision

Marble A

Marble B

Speed

Direction

Speed

Direction

Student A

2.0 m/s

Left

2.0 m/s

Left

Student B

0 m/s

None

1.0 m/s

Right

Student C

1.0 m/s

Left

1.0 m/s

Right

Student D

2.0 m/s

Left

0 m/s

None

Which student's prediction is most likely correct?

Student A

Student B

Student C

Student D

+1

Answers (1)

Know the Answer?

Avery Cooley · Answer 1

Student B

Explanation:

The conservation of momentum principle means the sum of the velocities of the two marbles cannot be greater than the initial velocity of marble A, since they are identical (most importantly, in terms of their mass).