A lift performs the first part of its ascent with uniform acceleration and the…

PHYSICS · Single correct · CBSE · Physics · Motion in a Straight Line · Motion in a Straight Line

Problem

A lift performs the first part of its ascent with uniform acceleration

a

and the remaining part with uniform retardation

2a

. If

t

is the time of ascent, find the depth of the shaft. (1)

\frac{at^2}{4}

(2)

\frac{at^2}{3}

(3)

\frac{at^2}{2}

(4)

\frac{at^2}{8}