An electron starting from rest has a velocity that increases linearly with the time that is \[v=kt,\] where \[k=2m/{{\sec }^{2}}\]. The distance travelled in the first 3 seconds will be [NCERT 1982]

• A.             9 \[m\]
• B.             16 \[m\]
• C.             27 \[m\]           
• D.             36 \[m\]