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Two gliders, X and Y, are placed on an air track. The gliders are pushed towards each other as shown.
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The gliders collide and continue to move after the collision.
Which row of the table could show the velocities of X and Y, in m s−1, after the collision?
| X | Y |
A | −1.0 | 0.5 |
B | −1.0 | −0.5 |
C | −2.0 | −1.0 |
D | −2.0 | 2.0 |
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