Land Yacht - Science

Hello Everyone, in science we made a land yacht. We are working on Forces and motion and making a land yacht is a good example of this topic.  

Aim: Our goal is to make our land yacht and who will be the faster. 

Method: Cart, card box, Plastic bag, stick and strings. 

Result: Our distance was 4.5m and our time was 7.3sec. We have to divide them together and get our score. Our score was 0.61. 

How to calculate - 

v = d/t 

v (speed) d (distance) t (time)

Conclusion: The air passed through our bow in the front of our boat. The air goes in our plastic bag and the air moves our land yacht.