Question

If change in kinetic energy of a particle is zero then change in its momentum is

1) is positive. 2) is negative

3) is zero. 4) may be zero

Answer 1

Answer:

zero as given in diagram

Answer 2

${\huge{\bold{\blue{\underline{♡AnSwEr-♡}}}}}$

$<b>{ your answer is OPTION 4. May be zero}$

EXPLANATION :-

According to work energy theorem the work done by the force is equal to increase in the kinetic energy of the body. If the kinetic energy of the body increases then work is positive and if the kinetic energy decreases work is negative.Work done by conservative forces to move a particle in closed path is zero. Also, work done by nonconservative forces may be zero.

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