An express train is moving with a velocity v1. Its driver finds another train is moving on the same track in the same direction with velocity v2 (v2<v1). To escape collision, driver applies a retardation a on the train. The minimum time to escape the collision is

An express train is moving with a velocity v1. Its driver finds anothe

1.	An express train is moving with a velocity v1. Its driver finds another train is moving on the same track in the same direction with velocity v2 (v2<v1). To escape collision, driver applies a retardation a on the train. The minimum time to escape the collision is
Answer» An express train is moving with a velocity $v_{1}$ . Its driver finds another train is moving on the same track in the same direction with velocity $v_{2}$ $(v_{2} < v_{1})$ . To escape collision, driver applies a retardation a on the train. The minimum time to escape the collision is

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An express train is moving with a velocity v1. Its driver finds another train is moving on the same track in the same direction with velocity v2 (v2&lt;v1). To escape collision, driver applies a retardation a on the train. The minimum time to escape the collision is

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An express train is moving with a velocity v1. Its driver finds another train is moving on the same track in the same direction with velocity v2 (v2<v1). To escape collision, driver applies a retardation a on the train. The minimum time to escape the collision is