Physics: Collisions and Energy Conservation

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Questions and Answers

What is conserved in both elastic and inelastic collisions?

Potential energy
Kinetic energy
Momentum (correct)
Thermal energy

What happens to kinetic energy in an inelastic collision?

It is transformed into wasted energy (correct)
It is destroyed
It is conserved
It is transformed into potential energy

What is the main difference between elastic and inelastic collisions?

The conservation of kinetic energy (correct)
The direction of the momentum
The conservation of momentum
The speed of the objects

What is an example of wasted energy in an inelastic collision?

All of the above (D) Signup and view all the answers

What type of collision conserves both momentum and kinetic energy?

Elastic collision (D) Signup and view all the answers

What is the primary difference between the conservation of kinetic energy in elastic and inelastic collisions?

In elastic collisions, kinetic energy is conserved, while in inelastic collisions, kinetic energy is not conserved and is transformed into other forms of energy. Signup and view all the answers

What happens to the total kinetic energy in an elastic collision?

The total kinetic energy remains conserved. Signup and view all the answers

What is the fate of some kinetic energy in an inelastic collision?

It is transformed into wasted energy, such as light, heat, and sound. Signup and view all the answers

In what type of collision are both momentum and kinetic energy conserved?

An elastic collision. Signup and view all the answers

Why is momentum conserved in both elastic and inelastic collisions?

The law of conservation of momentum applies to all collisions, regardless of their type. Signup and view all the answers

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Study Notes

Collisions

In elastic collisions, both momentum and kinetic energy are conserved.
In inelastic collisions, momentum is conserved, but kinetic energy is not.
In inelastic collisions, some kinetic energy is transformed into wasted energy, which can take the form of:
Light
Heat
Sound

Collisions

In elastic collisions, both momentum and kinetic energy are conserved.
In inelastic collisions, momentum is conserved, but kinetic energy is not.
In inelastic collisions, some kinetic energy is transformed into wasted energy, which can take the form of:
Light
Heat
Sound