Two bodies having the same mass undergo elastic collision then their velocities after collision will be:
Correct answer: D. v1 = v2, v2' = v1
- A. v1' = 0, v2' = 0
- B. v1' = v2, v2' = 0
- C. v1' = v1, v2' = v2
- D. v1 = v2, v2' = v1
Explanation
a one-dimensional elastic collision between two bodies of equal mass, their velocities are exchanged. This means:The first body's velocity after the collision (v₁') is equal to the second body's velocity before the collision (v₂).The second body's velocity after the collision (v₂') is equal to the first body's velocity before the collision (v₁).Therefore, the correct relationship is:v₁' = v₂ v₂' = v₁So the correct answer from the provided options is v1 = v2, v2' = v1. It seems there's a small typo in the options you provided (it should likely be v1' = v2).
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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