Physics · LAWS OF MOTION

A body of mass \( 10\text{ kg} \) is sliding on a horizontal plane with kinetic friction coefficient \( \mu_k = 0.2 \). If an external horizontal force of \( 30\text{ N} \) is pulled on it, the acceleration of the body is (Take \( g = 10\text{ m s}^{-2} \)):

1. A
   \( 1.0\text{ m s}^{-2} \)
2. B
   \( 2.0\text{ m s}^{-2} \)
3. C
   \( 0.5\text{ m s}^{-2} \)
4. D
   \( 3.0\text{ m s}^{-2} \)