Force
- Force is energy released in a push or a pull
- Forces cause change in motion
- unbalanced forces cause no change in motion; unbalanced forces do
Speed
- speed is amount of distance covered in one unit of time.
- speed is a scalar quantity- shows distance over time.
- speed equals distance/time
- constant speed- if the speed of an object does not change -------------------------- Light travels at a constant speed
- Velocity- speed+direction
- vector quantity- shows speed plus direction