Kinematics - Initial Speed from Uniform Deceleration · PhysicsBowl 2015 #2

Physics · mechanics

Problem

A box uniformly slides 7.50 mm to rest across a flat surface in a time of 12.0 ss. What was the initial speed of the box when it started its slide? (A) 0.313 ms\frac{m}{s} (B) 0.625 ms\frac{m}{s} (C) 1.25 ms\frac{m}{s} (D) 2.50 ms\frac{m}{s} (E) 5.00 ms\frac{m}{s}

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