# data[].attributes.body
By Joe

# data[].attributes.body
4.91 m/s

# data[].attributes.body
Velocity=3.31m/s

# data[].attributes.body
.50 seconds

# data[].attributes.body
5.92 m/s

# data[].attributes.body
1.23 meters

# data[].attributes.body
Popsicle sticks
tape
glue
spoon
rubber bands
cardboard
string/yarn
clothespin

# data[].attributes.body
Height= 19 cm
Length= 29 cm
Width= 30 cm

# data[].attributes.body
The mangonel is a one armed catapult with a wooden or metal bowl on the end that is used to launch the catapult. Although it was a very sturdy catapult and was easy to roll into battle, it was inaccurate and its range was short.

# data[].attributes.body
The ballista catapult is a medieval machine that was used to hurl rocks and other missiles far distances in a crossbow like fashion. It was very easy to use and portable but the catapult was meant for throwing arrow type projectiles, not rocks. So the rocks or boulders did not fly as far as arrows.

# data[].attributes.body
Ballista

# data[].attributes.body
The trebuchet was an ancient Chinese war machine that was used for slinging rocks over walls and trenches. Heavy counterweights were used to sling the payload hundreds of yards. It can throw heavier stones farther than the mangonel and the ballista, but due to its large size and many moving and operating parts. It was difficult to set up and launch fast.

# data[].attributes.body
Mangonel

# data[].attributes.body
Trebuchet

# data[].attributes.body
Google Search, Google, www.google.com/search?q=mangonel%2Bcatapult&safe=active&rlz=1C5CHFA_enUS772US772&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiYpIHD8bbeAhVFxoMKHVY2ArQQ_AUIEygB&biw=1439&bih=726#imgrc=lnVkoTOp_Pg8hM:

https://www.google.com/search?safe=active&rlz=1C5CHFA_enUS772US772&biw=1439&bih=726&tbm=isch&sa=1&ei=BOHcW-C4GunojwSmxp-YDQ&q=trebuchet+catapult&oq=trcatapult&gs_l=img.1.1.0i7i30l10.127394.128645..129597...1.0..0.72.268.4......1....1..gws-wiz-img.......0j0i67j0i8i7i30.qdKRuUiDaqI#imgrc=ockd0DKVkREenM:

Google Search, Google, www.google.com/search?safe=active&rlz=1C5CHFA_enUS772US772&biw=1439&bih=726&tbm=isch&sa=1&ei=huHcW-3MPJCvjwSc7qnQAw&q=ballista%2Bcatapult&oq=ba&gs_l=img.1.0.35i39l2j0i67l3j0j0i67j0j0i67j0.50255.50407..51758...0.0..0.62.117.2......1....1..gws-wiz-img.m4bIbt6Zp2Q#imgrc=Y3gudvM98KxPnM:

# data[].attributes.body
The clothespin located towards the rear of the contraption was opened and the tip of the spoon was inserted inside the clip, thus expanding the rubber bands. The clip was pushed down, releasing the spoon and the rubber bands contracted. Hurling the ball towards our target.

# data[].attributes.body
1. We could have made a stronger base for the spoon and arm to sit on, it often bended a fraction of a centimeter while arming the spoon but it hurt us.
2. We could have secured the rubber bands that propel the spoon forward when we released the clip. Every once in a while they would slide down the Popsicle stick and loosening. We would have to readjust them and make them tighter.
3. I feel like when it comes to the amount of contributing parts, we could have added some more objects to help with the performance of the project.