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Using all of the knowledge that they have accrued
regarding various types of motion, Prep physics
students were recently tasked with building
something that is more often associated with history
than science: a catapult.  

Catapults are ideal models of projectile motion and
students were able to use their knowledge of
vectors and some basic trigonometry to design the
most effective model given the resources available.

Students had the option to build a more traditional
model powered by elastic materials (such as springs
or rubber bands) or a different type of catapult
called a trebuchet, which is powered  gravity’s pull
on a heavy counterweight.
Prep physics students build and file catapults
pointeschools.org
North Pointe
Preparatory
10215 North 43rd Avenue
Phoenix, AZ 85051
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The chosen projectile for the project was a simple
golf ball.

The competition for extra credit, which was awarded to the catapults which shot the furthest distance, was intense
and both the traditional models and the trebuchets had some impressive trials.  When the dust settled at the end of
the day, however, the most successful device belonged to Aubrey Gender, Gabby Gugachev, and Sheri Turner.  
Their model fired an impressive distance of just over 100 feet.  

Other notable successful entries belonged to Adam Beshoner & Amanda Balderama, as well as Luke Malin.  Special
thanks go out to Chris Dalpe, Jon Stumpp, Quentin Shoemaker, Joanna Brathwaite, and Diego Chavez for being on
ball-retrieval duty which helped move things along at a brisk pace.  

Click for photo gallery