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- A block is pushed upwards by the horizontal force F, without friction, on a surface inclined to 30° degrees horizontally as shown in the figure. If F = 50 N and m = 3.0 kg, what is the magnitude of the acceleration of the block? Option 3 4.6 m/s² Option 1 Option 2 Option 4 2.9 m/s? Option 5 2.3 m/s? 9.5 m/s? 4.8 m/s?5. A, is the projection of A on the unit vector ... a. i b. / C. j d. kc and e and g please