Yes; Collision is elastic.
The momentum of the gas molecule remains conserved whether the collision inelastic. The gas molecule moves with a velocity of \(200 \,m/s\) and strikes the stationary wall of the container, rebounding with the same speed. It shows that the rebound velocity of the wall remains zero.
Hence, the total kinetic energy of the molecule remains conserved during the collision. The given collision is an example of an elastic collision.
The bob A of a pendulum released from 30o to the vertical hits another bob B of the same mass at rest on a table as shown in Fig. 5.15. How high does the bob A rise after the collision ? Neglect the size of the bobs and assume the collision to be elastic.
Two identical ball bearings in contact with each other and resting on a frictionless table are hit head-on by another ball bearing of the same mass moving initially with a speed V. If the collision is elastic, which of the following (Fig. 5.14) is a possible result after collision ?
Figures 9.20(a) and (b) refer to the steady flow of a (non-viscous) liquid. Which of the two figures is incorrect ? Why ?
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