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A particle is acted upon by a force F wh...

A particle is acted upon by a force `F` which varies with position `x` is shown in figure .If the particle at `x = 0` kinetic energy of `25J` then the kinetic energy of the particle at `x = 16 m` is

A

45J

B

30J

C

70J

D

20J

Text Solution

Verified by Experts

The correct Answer is:
A
`w=(1)/(2)xx6xx10-4xx5+4xx5-5xx2`
`=30--20+20-10=20J`
`w=k_(f)-k_(i)`
`20=k_(f)-25`
`k_(f)=45J`
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