A train starts from rest at station S and moves in a straight line towards station T
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A train starts from rest at station S and moves in a straight line towards station T.
Phase 1: It accelerates uniformly up to a speed of 20m/s while covering 400m.
Phase 2: It then travels at this constant speed for 300s.
Phase 3: Finally, it is brought to rest at station T by a uniform retardation in 30s.
(i) Find the acceleration of the train during Phase 1.
(ii) Calculate the distance covered during Phase 1.
(iii) Determine the distance covered during Phase 3 and the magnitude of the retardation.
(iv) Calculate the total distance between stations S and T.