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Statement of a problem № 10280

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A 2.9-kg block slides with a speed of 2.1 m/s on a frictionless horizontal surface until it encounters a spring. (a) If the block compresses the spring 5.6 cm before coming to rest, what is the force constant of the spring? (b) What initial speed should the block have to compress the spring by 1.4 cm?




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