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Created for All rights reserved 2016.

As shown in the diagram above, a small block starts from rest, then slides down a frictionless ramp. It then slides across a frictionless horizontal surface until it collides with a larger block.

What quantity (or quantities) regarding the first block must be conserved as it slides, but before it collides with the second block?


Momentum only.


Mechanical energy only.


Both momentum and mechanical energy.


Neither momentum nor mechanical energy.

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