KinematicsHard

Question

A particle is projected vertically upwards from a point A on the ground. It takes t1 time to reach a point B but it still continues to move up. if it take further t2 time to reach the ground from point B then height of point B from the ground

Options

A. g(t1 + t2)2
B.gt1t2
C. g(t1 + t2)2
D. gt1t2

Solution

Lets take the top most point of trajectory be C.
Now,  tAC = ; And, tBC =
∴ Since, AB = AC - BC
=
= gt1t2

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