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A block attached to an ideal spring with a spring constant of 391 N/m oscillates on a horizontal frictionless surface. The total mechanical energy E = 118 J. What is the maximum extension of the spring, in cm, from its equilibrium position? Please round your answer to the nearest whole number (integer).A 19-kg particle moves along the x axis under the influence of a variable force. The potential energy is given by U(x) = 3 x 2 + 3 x ; where x is in coordinate of the particle. If the particle has a speed of 22 m/s when it is at x, = 2.0 m, what is its speed when it is at X2 = 3.0 m? Please round your answer to one decimal place.A 20-kg block is released from rest at hy = 27 m above the ground. What is its speed, V2 in m/s, when it is h2 = 7 m above the ground? Take the acceleration due to gravity, g, as 9.80 m/s. Please round your answer to one decimal place