# Lab 02 - Projectile motion.docx - PhET Simulation...

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PhET Simulation: Projectile Motion Name________________________________________________ Date _________ Introduction – You will use a computer simulation today to reinforce your ideas of vectors, acceleration and velocity. You will also start to investigate what projectile motion is. Since this is “inquiry based”, you’re not supposed to know everything going in, but learn as we walk through the lesson. Projectile Motion refers to the motion of an object that is shot through the air. Think an arrow shot from a crossbow or a cannonball shot from a cannon. This motion depends on many factors including gravity, air resistance, altitude, mass, initial speed, etc. In this simulation, we will be examining those factors. Website : Part I: Intro 1. Begin with the cannon as is: Pumpkin, 15 m/s initial v, 0 degree loft. Shoot the pumpkin here. Next shoot the pumpkin at initial speed of 25 m/s. Finally fire the pumpkin at the initial speed of 0 m/s. Use the crosshairs marked with time range and height to mark the last dot of the flight. Fill in the table below with the values. Extend the table and use 2 more values for the initial velocity (your choice) Initial Speed Time Range Height 0 m/s 15 m/s 25 m/s
2. What do these values tell you? 3. Change to a different projectile like a car and repeat the same experiment. What does this tell you? Part II: Vectors Initial setup and explanation You’ll see a cannon on the left of your screen. To fire the cannon, click the red button at the bottom of the screen.