Solving a problem in physics section 8 point 80 mechani

Solving a problem in physics section 8 point 80 mechani

80. The train is moving in a straight line at a speed of υ0 = 180 km / h. Suddenly, on the way there is an obstacle and the driver includes a brake. Since then, the train speed varies as υ = υ0 - αt2, where α = 1 m / s3. What is the braking distance of the train? How soon after the start of braking to stop it?

Additional information:

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)