Projectile Motion || Grade 9 Physics || K to 12 Science
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This document discusses projectile motion, beginning with an overview of the objectives and definitions. It explains that a projectile experiences only gravity and air resistance, and its motion can be analyzed as independent vertical and horizontal components. Horizontal projectiles follow the simplest case where velocity is constant horizontally but follows parabolic free fall vertically. Non-horizontal projectiles require calculating initial velocity components and analyzing changes in vertical velocity over time. Solving projectile motion problems generally involves drawing diagrams, choosing a coordinate system, and applying the independent kinematic equations along each axis. Air resistance decreases a projectile's range from the ideal parabolic trajectory.
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1) Projectile motion refers to the motion of objects thrown or projected into the air at an angle. It is determined by the object's initial velocity and gravity.
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Projectile Motion at an Angle || Grade 9 Physics || Physics Notes
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The document discusses projectile motion, which is two-dimensional motion under constant acceleration. Projectiles follow a parabolic trajectory due to gravity acting downward. The horizontal and vertical motions can be analyzed separately, with the horizontal motion having constant velocity and the vertical following equations for constant acceleration. Key aspects include calculating the maximum height, range, and landing location of a projectile given initial velocity and angle.
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Parabolic motion refers to the motion of an object thrown or projected at an angle, which involves independent horizontal and vertical motion combined. The horizontal motion has constant velocity, while the vertical motion is affected by gravity and results in changing velocity. The time of flight of the object is determined by its vertical motion. Key factors that determine the height and distance traveled are the projection angle, speed, and initial height.
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Projectile Motion || Grade 9 Physics || K to 12 Science
- 1. Projectile Motion P R E S E N T E D B Y S U J H S P H Y S I C S T E A C H E R S G R A D E 9 P H Y S I C S
- 2. Learning Targets I can describe the horizontal and vertical motions of a projectile. I can investigate the relationship between the angle of release and the height and range of the projectile.
- 3. Studying projectile motion is like looking at an optical illusion.
- 4. PROJECTILE MOTION A type of motion wherein an object called a projectile is thrown in the air and moves a curved path under gravity alone
- 5. Types of Projectiles Horizontally launched Projectile Nonhorizontally launched Projectile 1 2
- 6. No resistance in any form Constant horizontal velocity Zero horizontal acceleration (ax = 0) Horizontal distance: Range HORIZONTAL MOTION X-COMPONENT VERTICAL MOTION (FREE FALL) Y-COMPONENT COMPONENTS OF PROJECTILE MOTION Acted upon by gravity Accelerating vertical velocity Constant vertical acceleration (g = ay = - 9.8 m/s2) Vertical distance: Maximum Height
- 7. y HORIZONTAL MOTION: Has an initial horizontal velocity that is constant (neglecting air resistance) ax = 0 VERTICAL MOTION: accelerating due to gravity ay = -9.8 m/s2 PROJECTILE MOTION - Has a curvilinear path called trajectory - Vertical & horizontal components are independent of each other Projectile Motion
- 8. INDEPENDENCE OF THE HORIZONTAL & VERTICAL COMPONENTS OF PROJECTILE MOTION
- 9. PROJECTILE MOTION o Neglecting Air Resistance o Under the sole influence of gravity Horizontal velocity is always constant Vertical velocity decreases as the projectile moves up and increases while it moves down along its trajectory Velocity Horizontal acceleration is always zero Vertical acceleration is always equal to the acceleration due to gravity, -9.8 m/s2 (on Earth) Acceleration Horizontal distance – range Vertical distance – maximum height Distance
- 10. HUMILITY IS NOT THINKING LESS OF YOURSELF BUT THINKING OF YOURSELF LESS. C.S LEWIS PRESENTED BY SUJHS PHYSICS TEACHERS
- 11. REFERENCES C.S. Lewis on Humility | Humility, Inspirational quotes, Quotable quotes. (n.d.). Pinterest. https://www.pinterest.ph/pin/388646642816576065/ Department of Education (2016). K to 12 Curriculum Guide for Science: Kindergarten to Grade 10. Retrieved from http://deped.gov.ph/sites/default/files/page/2016/Science%20CG.pdf Garcia, R.J.G., Laurente, J.A.T., Montebon, D. R. T., & Auditor, E. (2015). Science for the 21st century learner 9. [e-textbook] Moros, E.M., Avilla, R.A., Greogorio, J.B., & Pineda, M.G.F. (2018). Practical science 9. Makati City: University Press First Asia Papa, E. C. R., Moros, E.M., Pineda, M. G. P., & Gregorio, J.B. (2018). Practical Science 7. Makati City: University Press of First Asia