# A particle of mass is moving horizontally with a constant velocity towards a rigid wall that is moving in opposite direction with a constant speed  . Assuming elastic impact between the particle and wall, the work done by the wall in reflecting the particle is equal to a) (1/2) b) (1/2) c) (1/2) d) None of these

## Question ID - 100239 :- A particle of mass is moving horizontally with a constant velocity towards a rigid wall that is moving in opposite direction with a constant speed  . Assuming elastic impact between the particle and wall, the work done by the wall in reflecting the particle is equal to a) (1/2) b) (1/2) c) (1/2) d) None of these

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 A particle of mass 4 is projected from the ground at some angle with horizontal. Its horizontal range is At the highest point of its path it breaks into two pieces of masses and 3 respectively, such that the smaller mass comes to rest. The larger mass finally falls at a distance from the point of projection, where is equal to a) b) c) d) None of these 