A body starting from rest, accelerates at a constant rate a π‘šπ‘  2 for some time after which it decelerates at a constant rate 𝑏 π‘š/𝑠 2 to come to rest finally. If the total time elapsed is 𝑑 𝑠𝑒𝑐, the maximum velocity attained by the body is given by

Question : A body starting from rest, accelerates at a constant rate a π‘šπ‘  2 for some time after which it decelerates at a constant rate 𝑏 π‘š/𝑠 2 to come to rest finally. If the total time elapsed is 𝑑 𝑠𝑒𝑐, the maximum velocity attained by the body is given by

(A) \dfrac{ab}{a+b}tm/s

(B) \dfrac{ab}{a-b}tm/s

(C) \dfrac{2ab}{a+b}tm/s

(D) \dfrac{2ab}{a-b}tm/s

Answer : option (A)

Solution :

A body starting from rest, accelerates at a constant rate a π‘šπ‘  2 for some time after which it decelerates at a constant rate 𝑏 π‘š/𝑠 2 to come to rest finally. If the total time elapsed is 𝑑 𝑠𝑒𝑐, the maximum velocity attained by the body is given by
Tags: No tags

Add a Comment

Your email address will not be published. Required fields are marked *