question_answer

A neutron having mass of \[1.67\times {{10}^{-27}}\] and moving at.\[{{10}^{8}}m/s\] collides with a deuteron at rest and sticks to it. If the mass of the deuteron is \[3.34\times {{10}^{-27}}kg.\]The speed of the combination is :

A)  \[4.33\times {{10}^{7}}m/s\]   

B)  \[2.33\times {{10}^{7}}m/s\]

C)  \[1.67\times {{10}^{7}}m/s\]    

D)  \[3.33\times {{10}^{7}}m/s\]