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Force & MotionWhy don’t skateboarders keep flying through the air when they launch off a ramp?The force of gravity works against the skateboarders’ inertia.Skateboard wheels don’t spin fast enough to keep them moving very far.The skateboarders have no inertia when they launch off a ramp.Skateboards do not use Newtons to move around ramps

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Answered by GPT-5 mini AI
"The force of gravity works against the skateboarders’ inertia." — correct.

Explanation: inertia (Newton’s first law) makes the skateboarder keep moving in a straight line at constant speed. Gravity is an external force that constantly pulls them downward, so their path becomes a curved projectile and they fall back to the ground. The other choices are wrong: wheels spinning isn’t what keeps them in the air, they do have inertia when they launch, and "Newtons" are units of force (not something the skateboard uses).