Question

In a trial, an expert witness uses the conservation of momentum to demonstrate which initial velocities would give the final states that occurred in the accident. Can using the conservation of momentum be justified in this case? Yes, because momentum is conserved in all collisions. No, momentum is only conserved in elastic collisions which this is not. No, energy is always conserved, but momentum is only sometimes conserved. Yes, because momentum is conserved in inelastic collisions which all car accidents are.​

Answer 1

Yes, because momentum is conserved in all inelastic collisions which all car accidents are

Explanation:

What is law of conservation of momentum?

It states that In a equilibrium the initial momentum is equal to to the final momentum of the body

Or

`\\ \sf\longmapsto \Delta P=P`

Answer 2

• Yes, because momentum is conserved in all collisions.

Explanation:

→ Elastic collision, inelastic collision and perfectly inelastic collision, linear momentum is conserved assuming no external forces acting on the system.

In elastic collision

`\dashrightarrow \: { \tt{m _(1)u _(1) + m _(2) u_(2) = m_(1)v_(1) + m_(2)v_(2)}} \\`

In inelastic collision

`\dashrightarrow \: { \tt{m_(1)u_(1) + m_(2)u_(2) = (m_(1) + m_(2))v}}`