when total work done by a particle is positive :
1.KE remains constant 2. momentum increases 3. KE increases 4. KE decreases
Work done = change in kinetic energy
Work done = final kinetic energy - initial kinetic energy
In work done is positive then kinetic energy increases.
Since kinetic energy is directly proportional to the momentum therefore momentum also increases.
hence Option (2) and (3) are correct.
Work done = final kinetic energy - initial kinetic energy
In work done is positive then kinetic energy increases.
Since kinetic energy is directly proportional to the momentum therefore momentum also increases.
hence Option (2) and (3) are correct.