# Collisions and Impulse

<figure><img src="https://507685868-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPsPFwMJZnbetrOXTlLcz%2Fuploads%2F8XMkELFf1gSwsMgRH23s%2Fimage.png?alt=media&#x26;token=df457c97-4de2-47ad-9bdd-e047429c7c34" alt=""><figcaption></figcaption></figure>

<figure><img src="https://507685868-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPsPFwMJZnbetrOXTlLcz%2Fuploads%2FlZNbcQdSpFxsOuWdIiq5%2Fimage.png?alt=media&#x26;token=10f3e2b6-b3e0-417b-99a4-6c81cbc4fc44" alt=""><figcaption><p>To remove calculus?</p></figcaption></figure>

<figure><img src="https://507685868-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPsPFwMJZnbetrOXTlLcz%2Fuploads%2FdnPGKgEml5RucCt42E1Y%2Fimage.png?alt=media&#x26;token=6c127672-dda7-4e56-8079-20dc20e71eac" alt=""><figcaption></figcaption></figure>

Elastic Collisions: Kinetic Energy is conserved.

Inelastic Collisions: Kinetic Energy is not conserved.

* Note that even when the kinetic energy is not conserved, the total energy will be conserved.
