projectiles motion in two dimensions chapter 7. projectile an object launched into the air by a...
DESCRIPTION
Horizontal Motion The red ball moves horizontally at equal intervals (constant velocity) It is not speeding up or slowing downTRANSCRIPT
![Page 1: Projectiles Motion in Two Dimensions Chapter 7. Projectile An object launched into the air by a force Trajectory The path followed by a projectile](https://reader036.vdocument.in/reader036/viewer/2022062523/5a4d1b107f8b9ab05998e8ae/html5/thumbnails/1.jpg)
ProjectilesMotion in Two Dimensions
Chapter 7
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Projectile An object launched into the air by a force
Trajectory The path followed by a projectile
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Horizontal Motion
• The red ball moves horizontally at equal intervals (constant velocity)
• It is not speeding up or slowing down
![Page 4: Projectiles Motion in Two Dimensions Chapter 7. Projectile An object launched into the air by a force Trajectory The path followed by a projectile](https://reader036.vdocument.in/reader036/viewer/2022062523/5a4d1b107f8b9ab05998e8ae/html5/thumbnails/4.jpg)
Independence of Motion
• All the balls fall at the same rate
• The horizontal and vertical motions are independent of each other
![Page 5: Projectiles Motion in Two Dimensions Chapter 7. Projectile An object launched into the air by a force Trajectory The path followed by a projectile](https://reader036.vdocument.in/reader036/viewer/2022062523/5a4d1b107f8b9ab05998e8ae/html5/thumbnails/5.jpg)
Projectile Motion Equations
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Objects Launched at an Angle
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Range (R)• The horizontal distance traveled by a projectile
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Velocity Components• Determine the vertical (y) and horizontal (x) components of the
initial velocity.
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Projectiles at an Angle
• Then use the values in the original equations
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Hang-Time equation
Should be negative 2
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Maximum Height equation• Same equation as before• Time = ½ the total time• Why?
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Range equation
• Horizontal distance• Same equation as
before• X = Vx t
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7.2 Periodic Motion
• Repeating Motion• An object on a string• Pendulum• Bouncing on a spring
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Circular Motion• Velocity is
perpendicular (tangent) to the radius
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Centripetal Acceleration
• “Toward the center”• The rate of change of
tangential velocity
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Period• Period (T) is the time of a complete revolution• 2 pie r = circumference = distance• Velocity = distance / time
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Centripetal Acceleration Equation
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Centripetal Forces• There must be a force to cause acceleration
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Centripetal Force Equation• Newton’s second law
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Changing Circular Motion: Torque
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Simple Harmonic Motion
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Amplitude
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Pendulum• The period of the pendulum
depends only the length. NOT mass or amplitude
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Pendulum• Can be used to calculate g at a specific location
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