A train moving at begins to accelerate uniformly

PHYSICS · Subjective · CBSE · Physics · Motion in a Straight Line · Motion in a Straight Line

Problem

A train moving at

20 \mathrm{~m} / \mathrm{s}

begins to accelerate uniformly. After covering 400 m , its speed becomes

40 \mathrm{~m} / \mathrm{s}

. Find the acceleration and determine the distance from the start where its speed becomes

30 \mathrm{~m} / \mathrm{s}

. Explain whether this point is nearer to the start or to the end.