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When a body collides with a wall or the ground, what assumption do we make?

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in Physics – Class 11 by (74.2k points)
When a body collides with a wall or the ground, what assumption do we make?

(a) The mass of the body is not negligible

(b) The body is stationary

(c) The mass of the body is negligible as compared to the mass of the wall or the ground

(d) The body is perfect

This question was posed to me during an interview.

My question comes from Laws of Motion in division Laws of Motion of Physics – Class 11

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The correct option is (c) The mass of the body is negligible as compared to the mass of the wall or the ground

For explanation I would say: When a body collides with a wall or the ground, we consider that the mass of the body is negligible as compared to the mass of the wall or the ground. We also make this assumption when something like a feather, which has a very small mass collides with a truck, which, comparatively, has a huge mass.

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