# A neutron having mass of 1.67 × 10−27 𝑘𝑔 and moving at 108𝑚/𝑠 collides with a deutron at rest and sticks to it. If the mass of the deutron is 3.34 × 10−27 𝑘𝑔 then the speed of the combination is

Question: A neutron having mass of 1.67 × 10−27 𝑘𝑔 and moving at 108𝑚/𝑠 collides with a deutron at rest and sticks to it. If the mass of the deutron is 3.34 × 10−27 𝑘𝑔 then the speed of the combination is

(A) 2.56 × $10^{3}$ 𝑚/𝑠

(B) 2.98 × $10^{5}$ 𝑚/𝑠

(C) 3.33 × $10^{7}$ 𝑚/𝑠

(D) 5.01 × $10^{9}$ 𝑚/𝑠