1. A 450-N is in contact with a level plane of fk = 0.10. If the block is acted upon by a horizontal force of 75N, what time will elapse before the block reaches a velocity of 15m/s, starting from rest? 2. A 450-N is in contact with a level plane of fk = 0.10. The block is acted upon by a horizontal force of 75N. The block reaches a velocity of 15m/s, starting from rest. If the 75-N force is then removed, how much longer will the block continue to move?

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