A stone falls freely under gravity. It covers distances h1,h2 and h3 in the first 5 seconds, the next 5 seconds and the next 5 seconds respectively. The relation between h1, h2 and h3 is:

  • Option 1)

    h1=h2=h3

  • Option 2)

    h1=2h2=3h3

  • Option 3)

    h_{1}=\frac{h_{2}}{3}=\frac{h_{3}}{5}

  • Option 4)

    h2=3h1and h3=3h2

 

Answers (1)

As we learned in

D_{n}\:=\:4+\frac{9}{2}(2n-1),\:\:D_{n}\propto (2n-1)

\therefore\:D_{1}:\:D_{2}\::D_{3}\:=\:1:3:5

h_{1}\:=\:\frac{h_{2}}{3}\:=\:\frac{h_{3}}{5}


Option 1)

h1=h2=h3

This option is incorrect.

Option 2)

h1=2h2=3h3

This option is incorrect.

Option 3)

h_{1}=\frac{h_{2}}{3}=\frac{h_{3}}{5}

This option is correct.

Option 4)

h2=3h1and h3=3h2

This option is incorrect.

Preparation Products

Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
Buy Now
Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-
Buy Now
Test Series JEE Main April 2021

Take chapter-wise, subject-wise and Complete syllabus mock tests and get in depth analysis of your test..

₹ 6999/- ₹ 4999/-
Buy Now
JEE Main Rank Booster 2021

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 13999/- ₹ 9999/-
Buy Now
Knockout BITSAT 2021

It is an exhaustive preparation module made exclusively for cracking BITSAT..

₹ 4999/- ₹ 2999/-
Buy Now
Boost your Preparation for JEE Main 2021 with Personlized Coaching
 
Exams
Articles
Questions