Question (1 Viewer)

[Jono_2007]

Q) A proton of mass 1.67x10^-27 kg travelling with a speed of 1.20x10^7m/s collides with a stationary deuteron. After the collision, the proton rebounds in the direction that it came from, with a speed of 1.00x10^7m/s. The dueteron acquired a speed of 1.10x10^7 m/s.
a) What is the mass of the deuteron?
b) Is this an elastic collision? [show relevent working]

 

[rama_v]

Q) A proton of mass 1.67x10^-27 kg travelling with a speed of 1.20x10^7m/s collides with a stationary deuteron. After the collision, the proton rebounds in the direction that it came from, with a speed of 1.00x10^7m/s. The dueteron acquired a speed of 1.10x10^7 m/s.
a) What is the mass of the deuteron?
b) Is this an elastic collision? [show relevent working]

(a) Use the momentum formula, m1u1 + m2u2 = m1v1 + m2v2
(b) If Kinetic energy is conserved then the collision is elastic. Hence use the Kinetic energy formula.