Question 5 of 15 - /1 E ... View Policies Current Attempt in Progress In the figure, a block of mass m = 19 kg is released from rest on a frictionless incline of angle 0 = 31. Below the block is a spring that can be compressed 3.2 cm by a force of 180 N. The block momentarily stops when it compresses the spring by 5.7 cm. (a) How far does the block move down the incline from its rest position to this stopping point? (b) What is the speed of the block just as it touches the spring? (a) Number Units (b) Number UnitsPrevious question Question 6 of 15 ... View Policies Current Attempt in Progress The figure here shows a plot of potential energy U versus position x of a 0.889 kg particle that can travel only along an x axis. (Nonconservative forces are not involved.) Three values are UA = 15.0 J, Up = 35.0 J and Uc = 45.0 J. The particle is released at x = 4.50 m with an initial speed of 7.04 m/s, headed in the negative x direction. (a) If the particle can reach x = 1.00 m, what is its speed there, and if it cannot, what is its turning point? What are the (b) magnitude and (c) direction of the force on the particle as it begins to move to the left of x = 4.00 m? Suppose, instead, the particle is headed in the positive x direction when it is released at x = 4.50 m at speed 7.04 m/s. (d) If the particle can reach x = 7.00 m, what is its speed there, and if it cannot, what is its turning point? What are the (e) magnitude and (f) direction of the force on the particle as it begins to move to the right of x = 5.00 m? Uc 2 6 x (m) (a) Number Unit (b) Number Unit V (c) (d) Number Unit (e) Number Unit (f)