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2. Two billiard balls, each with a mass of 0.35kg, strike each other head on. One ball is initially moving left at 4.1 m/s and ends up moving right at 3.5m/s. The second ball is initially moving to the right at 3.5ms. find that the velocity of the second ball? Is this collision elastic or inelastic?

Respuesta :

indrawboy

m1v1+m2v2=m1v1'+m2v2'

m(v1+v2)=m(v1'+v2')

v1+v2=v1'+v2'

left=-, right=+

-4.1+3.5=3.5+v2'

v2'=-4.1

this collision elastic

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