Question

29. A neutron having mass of 1.67x10-27 kg and moving at 10°m/s collides with a deutron at
rest and sticks to it. If the mass of the deutron is 3.34x10-27 kg then the speed of the
combination is
(a) 2.56x10m/s (b) 2.98x10m/s
(c) 3.33x10 m/s
33x10 mp "/
(a) 5.01x10°m/sTITUTIONS​

Answer 1

Answer:

A neutron having mass of 1.67x10-27 kg and moving at 10 m/s collides with a deutron at rest and sticks to it.

If the mass of the deutron is 3.34x10-27 kg then the speed of the combination is,

As per the conservation of momentum

$p1 = p2 \\ m1v1 = m2v2$

$1.67 \times 10 = 3.34 \times x \\ x = \frac{16.7}{3.34} = 5 \: \frac{m}{s}$