Projectile Motion Jenny Parham Alex Smith Physics, Per 6. 2008.

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Presentation transcript:

Projectile Motion Jenny Parham Alex Smith Physics, Per

Vector Quantities A quantity such as force, that has both magnitude and direction. Examples: Velocity, Acceleration

Scalar Quantities A quantity such as mass, volume, and time, which can be completely specified by it’s magnitude, and has no direction.

Velocity Vectors Vector: An arrow whose length represents the magnitude of a quantity & whose direction represents the direction of the quantity

Velocity Vectors Resultant- The vector sum of the two or more component vector

Velocity Vectors The 3-unit and 4-unit vectors add to produce a resultant vector of 5 units, at 37.5 degrees from the horizontal

Velocity Vectors The diagonal of a square is 2, times the length of one of its sides.

Components of Vectors Component- one of the vectors often mutually perpendicular whose sum is a resultant vector (any resultant vector may be regarded as a combination of 2 or more components)

Components of Vectors Resolution- the process of solving a vector into components

Components of Vectors Any vector drawn one a piece of paper can be resolved into vertical and horizontal components

Projectile Motion Projectile- any object that moves through air or through space, acted on only by gravity

Projectile Motion Projectiles near the surface of the Earth follow a curved path, due to the force of gravity.

Projectile Motion Horizontal component- when no horizontal force acts on the force acts on a projectile horizontal velocity is constant

Projectile Motion Vertical component- response to the force of gravity

Projectile Motion Most important to remember!!! …the horizontal component of motion for a projectile is completely independent of the vertical component of motion.

Upwardly Launched Projectiles With no gravity, the projectile will follow a straight-line path.

Upwardly Launched Projectiles The horizontal range of a projectile depends on the angle it’s launched at. The greater the launch angle, the higher the projectile will go, but…

Upwardly Launched Projectiles Complimentary launch angles will travel the same horizontal distance!!!

Fast-Moving Projectiles Satellite – an object that falls around the Earth or some other body rather than into it

Works Cited Hewitt, Paul. Conceptual Physics. Upper Saddle River, New Jersey: Prentice-Hall, Inc., 2002.