Question

PLZ HELP!!!!
A hockey puck B rests on a smooth ice surface and is struck by a second puck A moving at 30.0 m/s. Both move off at angles of 45o with the original direction of A. The pucks have equal masses of .200 kg each. The magnitude of the total momentum (kg m/s) before the collision was

Answer 1

@pooja195

Answer 2

@Nnesha

Answer 3

@mathmate

Answer 4

@jellybot23
As in all geometry problems, it is important to draw a diagram depicting the directions of movements of the pucks. Any misinterpretation in this respect will give a completely different answer. Read the question very carefully, because a plural somewhere will make a completely different picture.

1. Please draw a diagram of what \(you\) interpret from the question.

2. Before starting work, make assumptions \(with\) \(justifications\) on the following:
- if there is friction involved
- is the collision elastic or inelastic (or between the two)
- is momentum conserved
- is energy conserved
- is momentum a vector