2395 words - 10 pages

Projectile Motion Lab

By

Ellie Greve

Physics

Mr. Jacobson

SPH3U1-01

06/12/17

Table of Contents

Projectile Motion

LIST OF FIGURES AND TABLES…………………………………..……………….… ii

Introduction ……………………………………………………………………………. 1

Materials ……………………………………………………………………………….. 2

Procedure ………………………………………………………………………………. 2

Results ……………………………………………………………………………………3

Analysis …………………………………………………………………………………..4

Discussion ………………………………………………………………………………. 7

Conclusions …………………………………………………………………………….. 9

APENDICES……………………………………………………………………..…..… 10

i

List of Figures and Tables

Figure 1 Diagram of the Angle 0 ….……………………………………………………4

Figure 2 Diagram of the Angle 10 …………………………………………………….. 5

Figure 3 Diagram of the Angle 20 ………………………………………………………6

Figure 4 Diagram of the Angle 30 .…………………………………………………….. 6

Table 1 Testing Results………………………………………………………………..…3

ii

Introduction

The purpose of this lab was to study the properties of projectile motion, specifically by

finding the initial speed of a projectile launcher. From the motion of a plastic bullet projected

horizontally, the initial velocity of the bullet can be determined from the measured range. For a

given initial velocity, the projectile range will be measured for various initial angles, and also

calculated by applying the theory for motion with constant acceleration. The end goal of this

lab was to be able to calculate the required launch height and angle to hit a target.

[≥÷…

There are many necessary principles that were needed to successfully complete this

projectile motion lab. The initial velocity is found by dividing distance by time. This is derived

from the horizontal projectile motion equation of Δdx=VxΔt.

(more of the projectile motion equations can be found in Appendix A, page 10)

Velocity is a vector quantity and therefore can be broken up into its x and y

components. To find the initial horizontal velocity, we simply use cosine to solve for the value

using Vix=Vicosθ. Finding the initial vertical velocity is similar to Vix, however instead we use

sine. The way to solve for this is by using Viy=Visinθ. The launch angle is represented by θ.

Materials

The materials used in this lab were vital in the overall success of the assignment. To

attain the necessary data on projectile motion, the class used toy pistols, meter sticks, a

protractor app, and the target.

Procedure

In order to determine the results there was a deliberate procedure that was used. This

lab spanned over several classes and was overall a thorough and detailed lab. All the steps are

listed in order in the following section.

Before Launch Day

1. The class prepared the materials

2. Small groups of two or three people who would share the toy pistol were organized

3. The toy pistol was loaded with ammunition

4. Measure the height that the toy gun is being fired at

5. The toy pistol was shot at no angle to determine the distance it travels

6. All shots from the toy pistol were timed and measured

7. Various shots were made, each testing out a new angle...

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