Take a moment to answer these questions.
![video-thumb-01](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt94e7670bae1ca2cb/5f33a0f328ef1e01dfb52078/video.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
For an object slowing down, like a skateboard or a curling rock:
- What does the graph showing distance over time look like ?
- What does the graph showing speed over time look like?
- What does the graph showing kinetic energy over time look like?
Build a street curling rock!
![45678_Science_40.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt924072a953924d8a/5f22be6e4be7297d7e6c879a/45678_Science_40.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
- Done! I've built my street curling rock or freewheeling vehicle, or call it how you like!
Practice your push.
![45678_Science_34.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/bltfe781337be12f1e6/5f3e7bb15e0cc01e7b878bbc/45678_Science_34.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
- I have a starting line and a target.
- I can push my curling rock toward the target and trace a graph.
Get your Initial Speed.
![Student-04.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/bltf4f346bf04249ba1/5f3edeefb5522b218584894e/Student-04.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
- I've changed my program to get my initial graph speed.
- I've tried a new push of my curling rock and I can log an approximate initial speed.
Find the initial kinetic energy.
![Student-05.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blte605a7be5248d90a/5f3edef1bb85e316ed92ac98/Student-05.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
- My program is calculating and showing the kinetic energy at the beginning of my push.
m = 305 g
Let's play a game!
![45678_Science_32.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt9ef1dd743f5d8cb2/5f3e7bb1e65e3223c6042269/45678_Science_32.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
- I've prepared the playing field.
- I've tried to hit the middle of the target 3 times.
- I've measured the distance between the target and where the rock stopped.
How well did you do?
![Kyle-Kate-Reflect.png](https://assets.education.lego.com/v3/assets/blt293eea581807678a/blt1cc863d0312d5cbe/60e4041741f53e1ed05e1b6c/Kyle-Kate-Reflect.png?locale=en-us&auto=webp&format=jpeg&width=1800&quality=90&fit=bounds)
- I can answer these questions:
- How would you summarize your experiment?
- What have you learned?
Looking good!