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A student wants to know if the weight of a cart affects its speed at the bottom of a ramp. He can change the weight of the cart by adding different numbers of balls, and he can change the height of the
Impl
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Feb 24, 2023
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A student wants to know if the weight of a cart affects its speed at the bottom of a ramp. He can change the weight of the cart by adding different numbers of balls, and he can change the height of the ramp by using different numbers of blocks. Which three tests would be invalid? (Select all three)
Biology
middle-school
Impl
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Impl
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Answer: its the first one
Step-by-step explanation:
Alexandre Moraes
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Feb 25, 2023
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Answer: D
Step-by-step explanation:
The Pjot
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