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Unformatted text preview: resistance is neglected, therefore the net force becomes the weight. 5. 1/3 rd 6. Vectors have direction whereas scalar quantities do not. A vector would be an arrow pointing in a direction, or a car moving in a given direction, whereas a scalar quantity would be the car at a stand still or a car at a given speed, but not going anywhere, say on a giant tredmill. 7. When running on the road, your feet push on the road, and the road pushes on your feet – equal and opposite reaction. 8. A. Hammer hitting the nail is the action, and the reaction is the nail being driven down. B. The earths gravity pulling on the book is the action, and the reaction would be the book falling. C. A helicopter blade pushing the air downward is the action, and the air pushing the helicopter blade upward is the reaction. 9. A. 30 newtons B. .5 m/s (squared)...
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