Action-reaction: And Momentum Conservation Worksheet Answer Key

v 1 f ​ = 5 m/s

15 = 5 v 1 f ​ − 10

This law is useful in solving problems related to collisions and explosions, where the momentum of the objects involved changes. v 1 f ​ = 5 m/s 15

2 = 5 v f ​

2 ( 4 ) + 3 ( − 2 ) = ( 2 + 3 ) v f ​ v 1 f ​ = 5 m/s 15

In other words, if the total momentum of a system is \(p_i\) initially and \(p_f\) finally, then: v 1 f ​ = 5 m/s 15

m 1 ​ v 1 i ​ + m 2 ​ v 2 i ​ = ( m 1 ​ + m 2 ​ ) v f ​