A molecule in a gas container hits a horizontal wall with a speed of 200 m*s^(-1) at an angle of 30^@ with the normal and rebounds with the same speed . Is momentum conservedin the collision ? Is the collision elastic or inelastic ?

A molecule in a gas container hits a horizontal wall with a speed of 2

1.	A molecule in a gas container hits a horizontal wall with a speed of 200 m*s^(-1) at an angle of 30^@ with the normal and rebounds with the same speed . Is momentum conservedin the collision ? Is the collision elastic or inelastic ?
Answer» SOLUTION :As there is no external force, linear MOMENTUM is CONSERVED. The collision is elastic , because the magnitude of the MOLECULAR velocity REMAINS the same.