Middle School Physical Science Quiz
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MOTION AND STABILITY FORCES AND INTERACTIONS
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A student claims, "Forces cannot act across empty space—objects must touch." Which observation best disproves the student's claim?
A
A rubber eraser stays still on a desk until it is pushed by a hand.
B
A dropped ball falls toward Earth while it is not touching the ground.
C
A book stops sliding because friction acts when surfaces touch.
D
A door opens when someone pushes directly on it.
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