---
title: impulse
framework: tabletopkit
role: symbol
role_heading: Instance Property
path: tabletopkit/tablevisualstate/contact/impulse
---

# impulse

Impulse, the force over time of the collision, in newton-seconds.

## Declaration

```swift
let impulse: Float
```

## See Also

### Getting collision metrics

- [normal](tabletopkit/tablevisualstate/contact/normal.md)
- [position](tabletopkit/tablevisualstate/contact/position.md)