JEE Advanced 2016 Paper 1 Physics Q12

Physics · Kinematics · Laws of Motion · Rotation

Problem

The position vector

\vec r

of a particle of mass

m

is given by the following equation

\vec r(t)=\alpha t^3\hat i+\beta t^2\hat j

, where

\alpha=10/3\,\mathrm{m\,s^{-3}}

\beta=5\,\mathrm{m\,s^{-2}}

and

m=0.1

kg. At

t=1

s, which of the following statement(s) is(are) true about the particle?