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djstar
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Homework Statement
A train of mass 50 onnes traveling at 6o m/s collides head on into a stationary train which has a mass of 30 tonnes. If the two vehicles lock together after impact, calculate using the principles of conservation of momentum, what will be
a) their velocity after impact?
b) the loss of kenitec energy
i have had a attempt at A but i do no no where to start with B or what formula to use. this is my attempt at A)
Homework Equations
M1V1+M2V2=MfVf
M1= 50000kg
M2= 30000kg
V1 = 60m/s
V2 = 0 m/s
The Attempt at a Solution
MfVf = (50000*60)+(30000*0) = 3000000
3000000/ (50000+30000) = 37.5m/s
Could some one please help with Part b and help me with what formula to use