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1. |
A vehicle is moving up on an inclined plane. The vehicle has rear-wheel drive. Force of friction on the rear wheels will be in a direction |
A. | along the plane but backward |
B. | backward at an angle φ with the plane, where φ is the friction angle |
C. | along the plane but forward |
D. | forward at an angle φ with the plane, where φ is the friction angle |
Answer» D. forward at an angle œÜ with the plane, where œÜ is the friction angle | |