A particle starts from point with velocity and accelerates uniformly to at point

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A particle starts from point

A

with velocity

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

and accelerates uniformly to

v=50 \mathrm{~m} / \mathrm{s}

at point

B

. Where along

A B

will its speed be

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

? Justify whether that point lies closer to

A

, to

B

, or exactly at the midpoint, and explain your reasoning without direct substitution.