Questions
If resultant external force on a system of interacting particles is zero, its kinetic energy
a
Must remain conserved
b
Must decrease
c
Must increase
d
may not remain conserved
detailed solution
Correct option is D
For a system, net work done by all external and internal forces is equal to the change in kinetic energy.i.e., Wext+Wint=(K.E)f-(K.E)iHere Wext=0 but Wint≠0Talk to our academic expert!
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