Physics-
General
Easy
Question
A particle is acted upon by a force 
which varies with position 
as shown in figure. If the particle at 
has kinetic energy of 25 J, then the kinetic energy of the particle at 
is
- 45 J
- 30 J
- 70 J
- 135J
The correct answer is: 45 J
Work done=area between the graph force displacement curve and displacement
According to work energy theorem
=20+25
=45J
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