Pulling a heavy object across different surfaces.
Heavy object =
Plastic box with a big rock inside.
1. School room floor = very smooth= easy.
2. Verandah floor boards = smooth =harder. I needed to use more energy .
3. Outside dirt ground = un even and rough. l had to use lots of energy because the ground has rocks , it is not smooth.
Becky, what a great job you have done. I love the photos. You have investigated friction really well. Super!
ReplyDeleteWow Becky what a great job you did of explaining.
ReplyDeleteWell done Becky!!!!! I love the picture! Was the rock heavy and did you get tied of pulling?
ReplyDeleteGreat job, Becky. You put in some really great detail into your work. Welldone. :)
ReplyDelete