Choose between "windy sky" and "calm sky". Question: Milo was flying his helicopter when he learned that it experienced more resistance through windy sky then through calm sky. This means he was forced to fly less quickly through (A) windy sky (B) calm sky
windy sky

Choose between "tile" and "grass". Question: Bernie is pitching marbles. He notices that when he pitches the marbles on the tile in his kitchen, the marble goes faster and farther away than when he does the same action on grass. Which surface is applying less friction to the marble? (A) grass (B) tile?
grass

Choose between "floor" and "towel". Question: The toy train goes faster on the floor than the towel, because the floor has (A) more resistance (B) less resistance
towel