Trajectory

# Trajectory - Morales Trajectory Part 1 Crossbow Lab Purpose...

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Morales Trajectory Part 1: Crossbow Lab Purpose : To determine the various horizontal velocities, vertical velocities, and horizontal displacements at three different levels. Hypothesis : As the level height increases, so must the horizontal and vertical velocities. But after the three trials, the time should be relatively similar since all objects, whether dropped or pushed by a horizontal motion, should reach the ground at the same time. Materials : Meter sticks or measuring tape, plastic crossbow, dart as a projectile, GLX as a stopwatch Procedure : Find a long, level surface ground. Fasten the dart into the crossbow Measure the first height (knee) with the ruler Aim the crossbow straight parallel to the ground. Shoot the crossbow, and at the same time, begin recording the time until the dart first impacts the ground. Measure the displacement from the initial position of the dart in the crossbow to the first impact of the dart. Repeat the above steps for the medium (waist) and high (shoulder) heights. Data Table: Levels Heights (m) Time (s) Displacement (m) Low (Knee) 0.58 .93 7.22 Medium (Waist) 1.01 1.31 8.18 High (Shoulder) 1.59 1.53 8.72

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## This note was uploaded on 01/19/2012 for the course SCHOLARS 1111 taught by Professor Mason during the Spring '11 term at GWU.

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Trajectory - Morales Trajectory Part 1 Crossbow Lab Purpose...

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