• mat small rug, or stool to sit on while observing the bouncing ball A Make sure you wear your goggles.
Part A
Propose a hypothesis for how the position of the ball will affect the amount of its gravitational potential
energy
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A-35 E 3
А
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Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.