A person with initial speed of 1.25 m/s is moving to fire exit as described on the Fig. 1. His travel consists of two parts (AB and BC). In the first part (AB) he is moving with constant speed of 1.25 m/s. When he has achieved the point B, he will start to move with constant deceleration of 0.01 m/s2 due to the crowd in the second part of his What time is needed for the person to achieve the fire exit? Assume that AD is 7 m, BC is 3 m and α = 30o.
