A body initially at rest is moving with uniform acceleration a. It's velocity after n seconds is v. The displacement of the body in last 2s is
in Physics
55 views
4 Votes
4 Votes

A body initially at rest is moving with uniform acceleration a. It's velocity after n seconds is v. The displacement of the body in last 2s is

in Physics
by
4.3k Points

1 Answer

3 Votes
3 Votes
 
Best Answer

The correct option of this question is (a).

Since, a = \(\frac {v-u}{t}=\frac {v-0}{n}=\frac v n\)

Displacement in last 2s,

\(s _ { n } - s _ { n - 2 } = \frac { 1 } { 2 } a n ^ { 2 } - \frac { 1 } { 2 } a ( n - 2 ) ^ { 2 }\)

\(= 2 a ( n - 1 ) = 2 \times \frac { v } { n } ( n - 1 ) = \frac { 2 v ( n - 1 ) } { n }\)

by
4.3k Points

Related Questions

2 Votes
2 Votes
0 Answers 9 Views
2 Votes
2 Votes
0 Answers 22 Views
1 Vote
1 Vote
0 Answers 27 Views

Welcome To Informesia

Informesia Helps You To Prepare India's All States Board Exams (CBSE, ICSE, UP Board, BSEB, HPBOSE, RBSE, MSBSHSE) and Competitive Exam Like JEE (Main + Advanced), AIIMS, NEET, KVPY, NTSE, BITSAT, Olympiad, CLAT...etc.
For Any Query or Suggestion, Please Contact us on :
[email protected]

Connect us on Social Media