Question #05079

1 Answer
Steelballs
Dec 4, 2017

KE of mass 2= #1.2*10^-8# J

Explanation:

Using conservation of momentum:
m1v1=m2v2

m1= #1.6 * 10^-25# kg
m2= #2.4 * 10^-25# kg

KE of m1=#18*10^-9# J =#0.5m1v1^2#
We can find v1=#4.74*10^8# m/s

m1v1=m2v2
v2=#(m1v1)/(m2)#
v2=#3.16*10^8# m/s

KE of m2=#0.5m2v2^2#=#0.5*(2.4*10^-25)*((3.16*10^8)^2)#=#1.2*10^-8# J

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