11th grade Physics – Friction question

Description

A 100 kg mass is pulled by a rope with a horizontal force of 200 N on a horizontal surface with a constant speed of 0.50 m/s. Part b only) If the rope breaks, how long does it take for the mass to come to rest?*ANS key says it is 0.25 seconds, but I got 0.26 seconds. Simple explanation and steps please!

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