A 2.50 kg puck travelling to the right at 3.0 m/s collideswith a 1.5 kg puck tra

Question

A 2.50 kg puck travelling to the right at 3.0 m/s collideswith a 1.5 kg puck travelling to the left at 5.0 m/s. If thepucks are travelling over a frictionless surface and the collisionis inelastic, how fast will the pucks move after colliding? Thanks much! A 2.50 kg puck travelling to the right at 3.0 m/s collideswith a 1.5 kg puck travelling to the left at 5.0 m/s. If thepucks are travelling over a frictionless surface and the collisionis inelastic, how fast will the pucks move after colliding? Thanks much!

Explanation / Answer

    Given that the mass of puck is m1 = kg and m2 =   kg     initial velocity is u1 = 3.0m/s and  u2= -5.0m/s ------------------------------------------------------------------------    Apply conservation of momentum              m1 *u1 + m2*u2 = ( m1 +m2)V                                     V = [ m1 *u1 + m2*u2 ] / ( m1 +m2)                                         = --------- m/s       

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