# GATE2017 ME-1: 14

A particle of unit mass is moving on a plane. Its trajectory, in polar coordinates, is given by $r(t)=t^{2}, \theta (t)=t$, where $t$ is time. The Kinetic energy of the particle at time $t=2$ is

1. $4$
2. $12$
3. $16$
4. $24$

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