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# Lab 9 - Objective The objective of this experiment is to...

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The objective of this experiment is to measure a projectile using three different methods and figure out which method is best. Description: This lab has two different methods that has a steel ball shooting out of a spring gun horizontally. The ball can be shot off of the lab or into a pendulum where the velocity will be able to be measured through the conservation laws associated with Newton’s 2 nd law of nature. The third method involves finding the period of the pendulum swinging to calculate values of the initial speed v of the ball. Theory: The first part of this lab uses kinematics of the ball shooting out of the gun to find the velocity using the equation v = D(gh) 1/2 . The second and third part involves using the conservation of momentum and energy to calculate to calculate the speed of the ball based on the height that the pendulum it shoots into reaches. In the third part, the pendulum is assumed to be a mass less wire and the period of the pendulum is calculated which can be used to solve for the final velocity using the conservation of energy theorem. The calculations used are Final PE = initial KE; (M +m)gh = ½ mv 2 ; and v = (M + m)/m(2gh) 1/2 . Data:

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Lab 9 - Objective The objective of this experiment is to...

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