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<Chapter 9 (Moderate questions) - Attempt 2 Problem 9.54 < 1 of 2 > You devise a wind-up car powered by a spring for trips to the grocery store. The car has an inertia of 540 kg and is 4.3 m long. It should be able to accelerate from rest to 29 m/s at least 50 times before the spring needs winding. The spring runs the length of the car, and a full winding compresses it to half this length. V Part A In order to meet the acceleration requirement, what must the value of the spring constant be? Express your answer to two significant digits and include the appropriate units. uÅ ? Value k Units Submit Request Answer