Presentation on theme: "Unit 6.3 physics. An object at rest will stay that way unless a force acts on it An object in motion will continue to move in the same direction and."— Presentation transcript:
Explain why you feel heavier than normal at the bottom of a roller coaster and lighter at the top? Outline what is the purpose of headrest in a car. Explain why you should wear seatbelts in a car.
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