A 15 kilogram mass is traveling with a velocity of 2.7m/s. What is the object's kinetic energy?

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

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