Person Block Ice The mass of the block is 20 kg. Frictional forces between the block...

 

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Person Block Ice The mass of the block is 20 kg. Frictional forces between the block and the ice are negligible. The block has a wide cross-sectional area, so air resistance is acting on the block, but air resistance on the person is negligible. The person's shoes do not slip on the ice. Question As the person pushes the block, the person moves with the same constant speed as the block. In one situation, the person pushes the block with a force of 78 N moving it at a constant speed of 4.00 m/s a. Using a dot as a particle model (representing the person), draw and label the forces (not components) exerted on the person. Each force must be represented by a distinct arrow starting on, and pointing away from, the dot. (5 points) b. The person now stops and releases the block. Determine the magnitude and direction of the block's acceleration at the instant the block is released. Show your work. (5 points) Person Block Ice The mass of the block is 20 kg. Frictional forces between the block and the ice are negligible. The block has a wide cross-sectional area, so air resistance is acting on the block, but air resistance on the person is negligible. The person's shoes do not slip on the ice. Question As the person pushes the block, the person moves with the same constant speed as the block. In one situation, the person pushes the block with a force of 78 N moving it at a constant speed of 4.00 m/s a. Using a dot as a particle model (representing the person), draw and label the forces (not components) exerted on the person. Each force must be represented by a distinct arrow starting on, and pointing away from, the dot. (5 points) b. The person now stops and releases the block. Determine the magnitude and direction of the block's acceleration at the instant the block is released. Show your work. (5 points)