Show that (a)KE=1/2mv2

Explanation:

Let us consider, a body of mass ' m ' is lying at rest ( initial velocity = 0 ) on a smooth surface. Let a constant force F displaces this body in its own direction by a displacement ' d '. Let 'v' be it's final velocity. The work done ' W ' by the force is given by :

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The work done becomes the kinetic energy of the body. Thus, the kinetic energy of a body of mass ' m : moving with the velocity equal to 'v ' is 1 / 2 mv²

∴

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whitney would be experiencing fear or unintentional terror

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.