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Projectile Motion. Projectile Motion. Motion of objects moving in two dimensions under the influence of gravity. A projectile is an object moving through the air with no means of self-propulsion. Only gravity influences its motion. Projectile Motion.
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Projectile Motion • Motion of objects moving in two dimensions under the influence of gravity. • A projectile is an object moving through the air with no means of self-propulsion. Only gravity influences its motion.
Projectile Motion Regardless of its path, a projectile will always follow these rules: • Projectiles always maintain a constant horizontal velocity (neglecting air resistance). • Projectiles always experience a constant vertical acceleration of 9.80 m/s2 [down] (neglecting air resistance).
Projectile Motion • Horizontal and vertical motions are completely independent of each other. Therefore, the velocity of a projectile can be separated into horizontal and vertical components. • In the absence of air resistance, the trajectory of a projectile is always a parabola.
Projectile Motion • Objects dropped from a moving vehicle have the same velocity as the moving vehicle. • In order to solve projectile problems, you must consider the horizontal and vertical motion separately. All of the constant acceleration equations from Chapter 3 can be used for projectile motion.