https://padlet.com/lihuixing1/catapult Design your Catapult en-us 2020-07-24 07:54:13 UTC 2025-11-13 20:14:24 UTC hello@padlet.com https://padlet.net/icons/png/1f4d0.png https://padlet.com/lihuixing1/catapult/wish/667930232 Made using 8 sticks, 4 rubber bands and a spoon. Added more rubber bands/sticks to make the ball move further. 
EPE (rubber band) —> KE (stick) —> KE (pp ball)]]> 2020-08-03 12:07:35 UTC https://padlet.com/lihuixing1/catapult/wish/667930232 https://padlet.com/lihuixing1/catapult/wish/668578789 Calista, Ariel, Janelle and Naomi
Group 8
We built this catapult with all the sticks and rubber bands]]> 2020-08-04 00:58:16 UTC https://padlet.com/lihuixing1/catapult/wish/668578789 https://padlet.com/lihuixing1/catapult/wish/668578864 (Group 5)   Evelyn, Phoebe, Anna and Lynn’s catapult
It is very colourful
Our catapult will shoot the ping pong ball extremely high but not that far. ]]> 2020-08-04 00:58:23 UTC https://padlet.com/lihuixing1/catapult/wish/668578864 https://padlet.com/lihuixing1/catapult/wish/668579420 We tightened the rubber band around the plastic spoon and the ice-cream sticks to get the ping pong ball to move further. We used two rubber bands to strap the spoon to the ice-cream stick so it would be more secure and the rubber band will have more elastic potential energy.]]> 2020-08-04 00:59:09 UTC https://padlet.com/lihuixing1/catapult/wish/668579420 han_yu_en_2024 https://padlet.com/lihuixing1/catapult/wish/668580211 MY CATAPULT
We used  10 ice-cream sticks and 5 rubber bands to make this catapult. We realised that the spoon was too heavy and weighed down the catapult. So, we added more rubber bands to the front in order for it to possess more Elastic Potential Energy. 
We tried our best ;D

Group memebers(1)
Chloe
Yu En
Jana 
Lorraine

PS our ping pong ball got kidnaped


]]> 2020-08-04 01:00:18 UTC https://padlet.com/lihuixing1/catapult/wish/668580211 https://padlet.com/lihuixing1/catapult/wish/668580735 Group 4
The base has 8 ice cream sticks. After attaching that, we but a brown ice cream stick between 2nd last and the last stick. After that, we used another rubber band to attach the spoon to the extra ice cream stick, we then used a rubber band and tied it to the brown ice cream stick at the bottom.we also noticed that if we tie the rubber band closer to the end, the ping pong ball possesses more potential energy which will be converted to more kinetic energy of the ball, allowing it to travel a further distance. :)]]> 2020-08-04 01:01:04 UTC https://padlet.com/lihuixing1/catapult/wish/668580735 https://padlet.com/lihuixing1/catapult/wish/668582321 Members: Elizabeth, Olivia, Suzanne, crystal. 
Made using: spoon, Ruler]]> 2020-08-04 01:03:26 UTC https://padlet.com/lihuixing1/catapult/wish/668582321 https://padlet.com/lihuixing1/catapult/wish/668583513 We used 10 ice-cream sticks, 5 rubber bands, 1 spoon and a ping-pong ball. we added 1 more rubber band so that there is more elastic potential energy to be converted into more kinetic energy.
Energy conversion:
Elastic potential energy (stretched rubber bands) to kinetic energy (catapult) to kinetic energy (ping-pong ball)

]]> 2020-08-04 01:05:01 UTC https://padlet.com/lihuixing1/catapult/wish/668583513 https://padlet.com/lihuixing1/catapult/wish/668584908 MY GROUPS CATAPULT
we used all the ice cream sticks and we extended the catapult behind the spoon ]]> 2020-08-04 01:07:03 UTC https://padlet.com/lihuixing1/catapult/wish/668584908 avery_jun_2025 https://padlet.com/lihuixing1/catapult/wish/668585217 This is our amazing
 catapult]]> 2020-08-04 01:07:32 UTC https://padlet.com/lihuixing1/catapult/wish/668585217 https://padlet.com/lihuixing1/catapult/wish/668586961 Madison Asia Emma and Priscilla. We used a catapult that was higher and we used more rubber bands to hold the spoon and popsicle stick in place. So there would be  more elastic potential energy and the ball would move further.]]> 2020-08-04 01:10:05 UTC https://padlet.com/lihuixing1/catapult/wish/668586961 lim_yi_xian_ziphora https://padlet.com/lihuixing1/catapult/wish/668888604 even though we only used the number of ice-cream sticks that were given and didn't ask for more, we moved the ice-cream sticks (base) closer towards the end of the catapult (end of the spoon) so that the rubber bands would be stretched even more. Hence, it would possess more elastic potential energy (stretched rubber band), which would be converted into more kinetic energy (spoon on ice-cream stick) which would then be converted into more kinetic energy (ping pong ball), allowing the ping pong ball to travel a further distance. :)]]> 2020-08-04 09:20:35 UTC https://padlet.com/lihuixing1/catapult/wish/668888604