A particle moves in a straight line

MATHEMATICS · Subjective · AP · Calculus AB · Contextual Applications of Differentiation · Contextual Applications of Differentiation

Problem

A particle moves in a straight line, according to the law

x = 4a [t + a \sin \frac{t}{a}]

, where

x

is its position in meters,

t

is time in seconds & '

a

' is some constant. At what position, the velocity is zero?