PROTOTYPE #7

Because the tennisball got affected by the sandpaper, we searched for something new to make the wheels addhesive. We attached balloons on the wheels for the next test. As you can see on the picture below, the balloon didn't last very long.

CONCLUSION

Expected positive feedback:
The ball goes higher and further then without the balloons. And the ball isn't affected.

Unexpected positive feedback:
/

Expected negative feedback:
/

Unexpected negative feedback:
The ball doesn't go as far as the prototype with the sandpaper.
The balloon breaks after a few launches.

Makeability score: 2