A particle of mass 2 kg is moving along the x-axis under the action of a conservative force F(x). The potential energy of the particle as a function of position x is given by U(x) = x2 + 4x +15 where x is in meter. At x = 2 m, the particle has a kinetic energy of 18 J. Then the maximum speed of the particle is -
1
√34 m/s at x = -2
2
6 m.s at x = 0
3
√34 m/s at x = 2
4
34 m/s at x = -2