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		Concept Checker
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		Based on: Fish Catch Simulation
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		A. The after collision speed of the two fish is _______
     the pre-collision speed of the small fish.
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		B. The mass of the large fish + small fish is ______
     times the mass of the small fish.
		9
		Tap to Enter/Edit Answer.
		C. One can thus make the claim that ...
     When the amount of mass that is moving increases by a factor of 4,
     the speed with which the mass is moving _______.
		D. Now let's apply the claim:
Suppose a 1-kg cart moving with a speed of 80.0 cm/s collides with a 3-kg cart that is rest. If the two carts stick together after the collision, then they will move with a speed ______ cm/s.
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		Assuming the big fish is 3 times more massive than the small fish ...
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