Question

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

• A. $2.56 \times 10^{3}m/s$
• B. $2.98 \times 10^{5}m/s$
• C. $3.33 \times 10^{7}m/s$
• D. $5.01 \times 10^{9}m/s$

Answer 1

Answer: (C)

$3.33 \times 10^{7}m/s$

Answer 2

$m_{1} = 1.67 \times 10^{- 27}kg$, $u_{1} = 10^{8}m ⥂ / ⥂ s$,

$m_{2} = 3.34 \times 10^{- 27}kg$ and $u_{2} = 0$

Speed of the combination

}{= 3.33 \times 10^{7}m ⥂ / ⥂ s.}$$