. A block of mass 30 kg is at rest on a flat surface. The coefficient of static friction of the block-plane is 0.4, and the coefficient of kinetic friction is 0.3. The block is pushed by a force T, which is horizontal. Define: a. The magnitude of the force T so that the block begins to move b. After moving, determine the magnitude of the force T so that the block moves with constant speed. c. The magnitude of T so that the block moves with an acceleration of 2.0 m/s²

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