A single conservative force acts on a 1-gram particle that moves along  x -axis. The potential energy of the particle varies with  x  as  U  =  20 + (x − 2)2 , here  U  in erg and  x  in  cm . When the particle is at  x  =  5cm , its kinetic energy is  20erg . Then which of the following(s) is/are correct?

A particle moves along an x axis. Does the kinetic energy of the particle increase, decrease, or remain the same if the particle’s velocity changes (a) from −3 m/s to −2 m/s and (b) from −2 m/s to 2 m/s? (c) In each situation,isthe work done on the particle positive,negative,or zero?

A charged particle is accelerated in a uniform electric field.  When its velocity is 2 m/s, its electric potential energy is 100 J and its kinetic energy is 10 J.  What is the particle's potential energy when its velocity reaches 4 m/s?A.25 JB.70 JC.90 JD.135 J

Consider forces, work, and potential energy Complete the following statement:  A force that acts on an object is said to be conservative if...Group of answer choicesit obeys Newton’s laws of motion.it results in a change in the object’s kinetic energy.it always acts in the direction of motion of the object.the work it does on the object is independent of the path of the motion.the work it does on the object is equal to the increase in the object’s kinetic energy.

Consider forces, work, and potential energy Which of the following forces are conservative forces? Group of answer choicesFrictionGravityIdeal springRocket thrustTensionNormalDrag

Determine the potential energy at B.